Editing Lockheed P-3 Orion (section)

==Operators==
[[File:Military Operators P-3.svg|thumb|400px|A map with P-3 operators in red, former operators in pink.]]
[[File:P3B6P55COAN.jpg|thumb|An [[Argentine Navy]] P-3B]]
[[File:P-3W RAAF 11 Sqn 1990.jpeg|thumb|P-3C, 11 Sqn RAAF, in 1990]]
[[File:Lockheed CP-140 Canada 140102 ETNG.jpg|thumb|A Canadian [[CP-140 Aurora]] in June 2007]]
[[File:LockheedOrionGermanNavy-1313.JPG|thumb|A P-3C of the [[German Navy]]]]
[[File:Lockheed P-3C Orion, Portugal - Air Force JP7495968.jpg|thumb|A Portuguese Air Force P-3C Orion Cup+ (s/n 14810)]]
[[File:Japan P-3C JMSDF-Maritime patrol aircraft.jpg|thumb|A [[Japan Maritime Self-Defense Force]] P-3C]]
[[File:NOAA WP-3D Orions.jpg|thumb|NOAA [[WP-3D Orion|WP-3D]] ''Hurricane Hunters'']]
[[File:CBP P-3 Orion.jpg|thumb|A U.S. Department of Homeland Security P-3AEW&C used to track drug couriers]]

===Military operators===
;{{ARG}}
*[[Argentine Naval Aviation]] – six P-3B.{{citation needed|date=February 2024}} Based at [[Almirante Marcos A. Zar Airport|Base Aeronaval Alte. Zar]], [[Trelew]]; formerly assigned to Exploration Naval Squadron (Escuadrilla Aeronaval de Exploración) under Naval Aviation Force 3 (Fuerza Aeronaval 3) from 1997 to 2019 and now{{when|date=February 2024}} non-operational though being refurbished as of 2021.{{citation needed|date=February 2023}} In August 2023 Argentina bought four surplus P-3s from [[Royal Norwegian Air Force]].<ref>{{cite web |last1=Higuera |first1=Jose |title=Argentina buys P-3 Orion maritime patrol aircraft from Norway |date=8 September 2023 |url=https://www.defensenews.com/air/2023/09/08/argentina-buys-p-3-orion-maritime-patrol-aircraft-from-norway/ |publisher=DefenceNews |access-date=10 September 2023}}</ref> The first aircraft was delivered in September 2024.<ref>{{cite web | url=https://www.zona-militar.com/2023/12/28/vehiculos-y-aeronaves-incorporadas-por-las-fuerzas-armadas-argentinas-en-el-2023/ | title=Estos fueron los vehículos y aeronaves incorporadas por las Fuerzas Armadas Argentinas durante el año 2023 |website=Zona Militar |last=Roldán |first=Juan José | date= 28 December 2023 }}</ref><ref>{{Cite web |last=Manuel |first=Rojoef |date=2024-09-06 |title=Argentina Accepts First Orion Patrol Aircraft From Norway |url=https://thedefensepost.com/2024/09/06/argentina-first-orion-aircraft-norway/ |access-date=2024-11-09 |website=The Defense Post |language=en-US}}</ref><ref>{{Cite web |title=Argentina har mottatt første P-3 Orion fra Norge |url=https://www.fma.no/aktuelt-og-media/2024/argentina-har-mottatt-forste-p-3-orion-fra-norge |access-date=2024-11-09 |website=Norsk |language=no}}</ref>
;{{BRA}}
*[[Brazilian Air Force]] – 9 P-3AM (Upgraded) in 2008 (12 ex-USN airframes purchased).<ref>{{cite web |url=https://www.flightglobal.com/news/articles/world-air-forces-listing-a-b-58978/|title=World Air Forces listing A-B |date=24 November 1999 |archive-url=https://web.archive.org/web/20161121173551/https://www.flightglobal.com/news/articles/world-air-forces-listing-a-b-58978/ |archive-date=21 November 2016 |url-status=live}}</ref> Integrated with the [[CASA FITS]] (Fully Integrated Tactical System) utilized in [[antisubmarine warfare]].<!--dead link<ref>{{cite web |title=EADS |url=http://www.brazil.eads.net/1024/pt/press/press/20090429_airbus_military_p-3.html |website=brazil.eads.net |language=pt}}</ref>-->
;{{CHI}}
*[[Chilean Navy]] – four P-3A; based at Base Aeronaval Torquemada, [[Concón]]. Three used as patrol aircraft, one used for personnel transport. Chile plans to extend their service lives past 2030 by changing the wings, modernizing the engines, and integrating the [[AGM-84 Harpoon]] anti-ship missile.<ref name=dmilt>{{cite web |url=http://dmilt.com/index.php?option=com_content&view=article&id=7254:chile-p-3-orions-life-extension-plans&catid=35:latin-america&Itemid=58 |title=Chile; P-3 Orions life extension plans |archive-url=https://web.archive.org/web/20131002192228/http://dmilt.com/index.php?option=com_content&view=article&id=7254%3Achile-p-3-orions-life-extension-plans&catid=35%3Alatin-america&Itemid=58 |archive-date=2 October 2013 |website=Dmilt.com |access-date=13 July 2013}}</ref>
;{{CAN}}
*[[Royal Canadian Air Force]] – Canada purchased 18 P-3A in 1980. The [[Lockheed CP-140 Aurora|CP-140 Aurora]] are operated by [[404 Maritime Patrol and Training Squadron|404 Long Range Patrol and Training Squadron]], [[405 Maritime Patrol Squadron|405 Long Range Patrol Squadron]], [[415 Long Range Patrol Force Development Squadron]], (all three from [[14 Wing Greenwood]]), [[407 Long Range Patrol Squadron]] ([[19 Wing Comox]]).<ref>{{cite book|last1=Green|first1=William|title=Aircraft|url=https://archive.org/details/observersaircraf0000gree|url-access=registration|date=1988|publisher=Frederick Warne|isbn=0-7232-3534-1|pages=[https://archive.org/details/observersaircraf0000gree/page/142 142–143]|edition=37}}</ref><ref>{{cite web|title=CP-140 Aurora|url=http://www.rcaf-arc.forces.gc.ca/en/aircraft-current/cp-140.page|website=Royal Canadian Air Force|date=10 April 2013|access-date=14 January 2018|archive-url=https://web.archive.org/web/20180115001911/http://www.rcaf-arc.forces.gc.ca/en/aircraft-current/cp-140.page|archive-date=15 January 2018|url-status=live}}</ref> Upgraded aircraft now referred to as CP-140M
*The RCAF also operated 3 CP-140A Arcturus, P-3 aircraft purchased in 1991 without an anti-submarine warfare suite and used primarily for pilot training and long-range surface patrol. The last two were retired in 2011 and transferred to [[309th Aerospace Maintenance and Regeneration Group|AMARG]]. 
*14 CP-140M aircraft in use as of 2025 <ref name="Military Balance 2025">{{cite book |title=The Military Balance |date=2025 |publisher=[[International Institute for Strategic Studies]] |isbn=978-1-041-04967-8}}</ref>{{rp|32}}
;{{GER}}
*[[German Navy]] – four P-3C CUP+ (ex-[[Royal Netherlands Navy]], originally bought eight machines);<ref>{{Cite web |title=Joker zieht nicht mehr: Kein Seefernaufklärer der Marine einsatzbereit – Augen geradeaus! |url=https://augengeradeaus.net/2021/01/joker-zieht-nicht-mehr-kein-seefernaufklaerer-der-marine-einsatzbereit/ |access-date=13 April 2022 |website=augengeradeaus.net}}</ref> based at [[Nordholz Naval Airbase|NAS Nordholz]], Marinefliegergeschwader 3 ''Graf Zeppelin''
;{{GRE}}
*[[Hellenic Air Force]] – six P-3B operated jointly with the [[Hellenic Navy]], 1 in operable condition as of 2019, 3 additional are undergoing maintenance as of 2016 which should return them to airworthy condition, the first of which was completed in May 2019.<ref>{{cite web |last1=Igor |first1=Bozinovski |title=Greek P-3B re-enters service |url=https://www.janes.com/article/88678/greek-p-3b-re-enters-service |website=Jane's 360 |access-date=21 May 2019 |archive-url=https://web.archive.org/web/20190521203811/https://www.janes.com/article/88678/greek-p-3b-re-enters-service |archive-date=21 May 2019 |location=Skopje |date=21 May 2019 |url-status=live }}</ref>
;{{IRN}}
*[[Islamic Republic of Iran Air Force]] – five P-3F (71ASW SQN); based at [[Shiraz International Airport]] (Shahid Douran Air Base)
;{{JPN}}
*[[Japan Maritime Self-Defense Force]] – 93 P-3C, five EP-3, five OP-3C, one UP-3C, three UP-3D.<ref>[http://www.p3orion.nl/production.htmlAfter]{{dead link|date=January 2018|bot=InternetArchiveBot|fix-attempted=yes}}</ref> The [[Kawasaki Aerospace Company]] assembled five airframes produced by Lockheed, and then Kawasaki produced more than 100 P-3s under license in Japan.<ref name="Polmar">{{cite book |last1=Polmar |first1=Norman |title=The Naval Institute guide to the ships and aircraft of the U.S. fleet |date=2005 |publisher=Naval Institute |location=Annapolis, Maryland, USA |isbn=1-59114-685-2 |page=416 |edition=18th}}</ref> The [[Kawasaki P-1]] is gradually replacing them. As of March 2022, the JMSDF operated 40 P-3Cs.<ref name="doj2022">[https://web.archive.org/web/20221206231056/https://www.mod.go.jp/j/publication/wp/wp2022/pdf/R04shiryo.pdf Defence of Japan 2022 (Annual White Paper). p.53.] Japan Ministry of Defence</ref>
** [[Air Patrol Squadron 3 (JMSDF)]] (1984–2017)<ref>[https://www.mod.go.jp/msdf/atsugi/topics/index.html#equip 厚木航空基地HP トピックス：P－1への移行完了] {{Webarchive|url=https://web.archive.org/web/20170930113627/http://www.mod.go.jp/msdf/atsugi/topics/index.html#equip |date=30 September 2017 }} Retrieved 28 September 2017 {{in lang|ja}}</ref>
;{{PAK}}
*[[Pakistan Naval Air Arm]] – ~Four P-3C; based in [[PAF Base Faisal|Naval aviation base Faisal, Karachi]]. Upgraded P-3C MPA and P-3B AEW models (equipped with Hawkeye 2000 AEW system) ordered in 2006,<ref>Ansari, Usman. [http://www.defensenews.com/story.php?i=3926067 "Pakistan Navy To Boost Air Surveillance Capability."]{{dead link|date=August 2021|bot=medic}}{{cbignore|bot=medic}} ''defencenews.com,'' 30 January 2010. Retrieved: 14 July 2010.</ref> first upgraded P-3C delivered in early 2007. In June 2010, two more upgraded P-3Cs joined the Pakistan Navy with anti-ship and submarine warfare capabilities. A total of nine.<ref>Ansari, Usman. [http://www.expressindia.com/news/fullstory.php?newsid=81365#compstory "Pakistan navy planes to get more teeth."] {{Webarchive|url=https://web.archive.org/web/20121005064711/http://www.expressindia.com/news/fullstory.php?newsid=81365#compstory |date=5 October 2012 }} ''expressindia.com,'' 14 February 2007. Retrieved: 14 July 2010.</ref> Two aircraft were destroyed in an attack by armed militants at the Mehran Naval Airbase.
;{{POR}}
*[[Portuguese Air Force]]
**3 ''P-3C Update II-5'' and 2 ''P-3C CUP CG'' purchased to the [[Royal Netherlands Navy]] in 2006, modernised standard from 2008 to 2010 to the P-3C CUP+ with new sensors and a Missile and Laser Warning System. <ref>{{Cite web |date=2024-03-22 |title=Portugal to buy German Orion MPAs |url=https://www.janes.com/defence-news/news-detail/portugal-to-buy-german-orion-mpas |access-date=2024-12-17 |archive-url=https://web.archive.org/web/20240322040647/https://www.janes.com/defence-news/news-detail/portugal-to-buy-german-orion-mpas |archive-date=22 March 2024 }}</ref> They replaced six former RAAF P-3Bs upgraded to P-3Ps in the late 1980s. The last P-3P flew on 13 October 2011.<ref name=":2">{{Cite web |last=Hoyle2008-01-04T15:30:00+00:00 |first=Craig |title=Lockheed Martin to upgrade Portuguese P-3C Orion fleet |url=https://www.flightglobal.com/lockheed-martin-to-upgrade-portuguese-p-3c-orion-fleet/78117.article |access-date=25 October 2022 |website=Flight Global |language=en}}</ref><ref name=":3">{{Cite web |last=WEBTEAM |first=FAP- |title=Força Aérea Portuguesa |url=https://www.emfa.pt/aircraft-15-lockheed-p3c-cup-orion |access-date=25 October 2022 |website=www.emfa.pt |language=pt-PT}}</ref>  In 2022 Portuguese Air Force, [[General Dynamics]] and [[Canadian Commercial Corporation]] signed a contract to modernize the Portuguese P-3C's fleet with new communications, mission electronics and an Mission Management System.  It is operated by [[601 Squadron (Portugal)|601 Squadron "''Lobos''"]], based in [[Beja Air Base]]. 
**6 ''P-3C CUP+'' as well as spares, Mid-Life Upgrade sets, support equipment and flight simulators from [[German Navy]].<ref>{{Cite web |last=Herk |first=Hans van |date=2023-09-05 |title=Portugal buys German P-3C Orions |url=https://www.scramble.nl/military-news/portugal-buys-german-p-3c-orions |access-date=2023-09-16 |website=www.scramble.nl |language=en-GB}}</ref><ref>{{Cite web |date=2024-03-22 |title=Portugal to buy German Orion MPAs |url=https://www.janes.com/defence-news/news-detail/portugal-to-buy-german-orion-mpas |access-date=2024-12-17 |archive-url=https://web.archive.org/web/20240322040647/https://www.janes.com/defence-news/news-detail/portugal-to-buy-german-orion-mpas |archive-date=22 March 2024 }}</ref>
;{{KOR}}
*[[Republic of Korea Navy]] – eight P-3Cs, eight P-3CKs; based in [[Pohang Airport]] (Patrol Squadron 615<ref>{{cite web | url=https://theaviationgeekclub.com/republic-of-korea-navy-p-3-orion-squadron-marks-40-years-of-mishap-free-flights/ | title=Republic of Korea Navy P-3 Orion Squadron marks 40 Years of Mishap-Free Flights | date=22 February 2022 }}</ref>) and [[Jeju international airport]]. [[Korean Air]]/[[L-3 Communications]] upgraded the P-3Cs with new electronics, including [[magnetic anomaly detector]]s, electro-optical sensors, surveillance equipment and a self-protection suite. The Navy's impetus stems from a 2010 experience in which ROK forces detected only 28% of North Korean submarines involved in exercises.<ref>Perrett, Bradley. Sub-hunting, Aviation Week and Space Technology, 8 July 2013, p. 27.</ref>
;{{TWN}}
*[[Republic of China Air Force]] (1966–1967) – Three P-3As (149669, 149673, 149678) obtained by the [[CIA]] from the U.S. Navy under Project STSPIN in May 1963, as replacement aircraft for CIA's own covert operation fleet of RB-69A/P2V-7U versions. Converted by Aerosystems Division of LTV to be used as both ELINT and COMINT platform, the three P-3As were known as "black" P-3As under Project Axial. Officially transferred to the CIA on June/July 1964, the first of three "black" P-3As arrived in Taiwan and officially transferred to ROCAF's secret [[Black Bat Squadron]] on 22 June 1966. Armed with four Sidewinder short range AAM missiles for self-defense, the three "black" P-3A flew peripheral missions along China's coast to collect SIGINT and air samples. When the project was terminated in January 1967, all three "black" P-3As were flown to NAS Alameda, CA, for long-term storage. In September 1967, Lockheed at Burbank, converted two of the three aircraft (149669 and 149678) into the only two EP-3B examples in existence, while the third aircraft (149673) was converted by Lockheed in 1969–1970 to serve as a development aircraft for various electronic programs. The two EP-3Bs known as "Bat Rack", owing to their service with Taiwan's "Black Bat" Squadron, were issued to U.S. Navy's VQ-1 Squadron in 1969 and deployed to Da Nang, Vietnam. Later, the two EP-3Bs were converted to EP-3E ARIES, along with seven EP-3As. The two EP-3Es retired in the 1980s, when replaced by 12 EP-3E ARIES II versions.<ref name="Pocock">Pocock, Chris. ''The Black Bats: CIA Spy Flights Over China From Taiwan, 1951–1969''. Atglen, Pennsylvania: Schiffer Publishing, 2010. {{ISBN|978-0-7643-3513-6}}.</ref>
*[[Republic of China Navy]] – The Republic of China Navy obtained 12 P-3Cs under the U.S. government's Foreign Military Sales program in 2007 which were then modernized for an additional 15,000 flight hours.<ref>{{cite web |url=https://www.lockheedmartin.com/us/who-we-are/global/taiwan.html |title=Taiwan |website=Lockheed Martin |access-date=13 November 2017 |quote=P-3- The Taiwan Navy obtained 12 P-3C aircraft under the U.S. government's Foreign Military Sales program in 2007 which were then modernized to provide an additional 15,000 flight hours. |archive-url=https://web.archive.org/web/20171114040603/https://www.lockheedmartin.com/us/who-we-are/global/taiwan.html |archive-date=14 November 2017 |url-status=live }}</ref> 12 P-3Cs (ordered, with deliveries starting in 2012), with three spare airframes that may be converting to EP-3E standard; based in the south part of the island and offshore.<ref>[https://www.washingtonpost.com/wp-dyn/content/article/2009/03/13/AR2009031302806.html "U.S. in deal to refurbish aircraft for Taiwan."] ''Washington Post,'' 13 March 2009. Retrieved: 14 July 2010.{{dead link|date=November 2017}}</ref> In May 2014 Lockheed Martin were awarded a contract to upgrade and overhaul all 12 P-3Cs by August 2015.<ref>{{cite web|url=http://www.defense.gov/Contracts/Contract.aspx?ContractID=5281|title=Contract View|work=defense.gov|url-status=dead|archive-url=https://web.archive.org/web/20140531105840/http://www.defense.gov/Contracts/Contract.aspx?ContractID=5281|archive-date=31 May 2014}}</ref>
'''{{USA}}'''

* [[United States Navy]] – Three P-3C and one NP-3D remain in service with [[VX-30]], with another two NP-3C active with [[VXS-1]]. The P-3s were replaced in active duty and reserve squadrons by the [[Boeing P-8 Poseidon]].

===Former military operators===
;{{AUS}}
*[[Royal Australian Air Force]] – 18 AP-3C, 1 P-3C (1968–2023)
**[[No. 92 Wing RAAF|No. 92 Wing]]
***[[No. 10 Squadron RAAF|10 Sqn]], [[No. 11 Squadron RAAF|11 Sqn]] and [[No. 292 Squadron RAAF|No. 292 Sqn]]; based at [[RAAF Base Edinburgh]].<ref name=RAAF>{{cite web |url=http://www.raaf.gov.au/aircraft/orion.aspx |title=AP-3C Orion maritime patrol aircraft |archive-url=https://web.archive.org/web/20081219002508/http://raaf.gov.au/aircraft/orion.aspx |archive-date=19 December 2008 |website=raaf.gov |date=29 March 2009}}</ref>

'''{{flag|Pahlavi Iran}}'''

* [[Imperial Iranian Air Force]] - 6 P-3F operated from 1975 to 1979.<ref name=":1">{{Cite web |title=P-3 Orion Research Group |url=https://www.p3orion.nl/operators.html |access-date=2023-07-10 |website=www.p3orion.nl}}</ref>

'''{{Flag|Netherlands}}'''

* [[Royal Netherlands Navy]] ([[Netherlands Naval Aviation Service]]) - 13 P-3 Orion CUP operated from 1982 to 2006. Sold to Portugal and Germany.<ref>{{cite web |date=14 January 2005 |title=Koninklijke Marine heft officiëel twee laatste Orion-squadrons op |url=https://www.luchtvaartnieuws.nl/nieuws/categorie/4/militair/koninklijke-marine-heft-officieel-twee-laatste-orion-squadrons-op |archive-url=https://web.archive.org/web/20220927211257/https://www.luchtvaartnieuws.nl/nieuws/categorie/4/militair/koninklijke-marine-heft-officieel-twee-laatste-orion-squadrons-op |archive-date=27 September 2022 |access-date=25 June 2023 |website=Luchtvaartnieuws |language=Dutch |location=Valkenburg}}</ref><ref name=":1" />

'''{{NZ}}'''

* [[Royal New Zealand Air Force]] - 6 P-3B upgraded to P-3K2 operated by [[No. 5 Squadron RNZAF|No. 5 Squadron]] from 1966 - 2023.<ref>{{Cite web |title=Lockheed P-3K2 Orion Patrol Aircraft New Zealand Air Force Navy |url=https://www.seaforces.org/marint/New-Zealand-Navy/P-3K2-Orion.htm |access-date=2023-07-10 |website=www.seaforces.org}}</ref><ref name=":1" /> Five delivered in 1966, with another purchased from the [[Royal Australian Air Force|RAAF]] in 1985. All six were upgraded by [[L-3 Communications|L-3 Communications Canada]] and designated the P-3K2, with the first aircraft returned to New Zealand in 2011.<ref>{{Cite web |title=NZDF - Arrival of the RNZAF P3K2 Orion |url=http://www.nzdf.mil.nz/news/media-releases/2011/20110427-aotrpo.htm |url-status=live |archive-url=https://web.archive.org/web/20190112194942/http://www.nzdf.mil.nz/news/media-releases/2011/20110427-aotrpo.htm |archive-date=12 January 2019 |access-date=11 January 2019}}</ref> In 2018, the [[New Zealand Government]] announced that the aircraft would be replaced by 4 new [[Boeing P-8 Poseidon|Boeing P-8A Poseidon]] aircraft.<ref>{{Cite news |title=New Zealand to buy four P-8A Poseidon Maritime Patrol Aircraft |language=en |work=The Beehive |url=https://www.beehive.govt.nz/release/new-zealand-buy-four-p-8a-poseidon-maritime-patrol-aircraft |url-status=live |access-date=9 July 2018 |archive-url=https://web.archive.org/web/20180710011240/https://www.beehive.govt.nz/release/new-zealand-buy-four-p-8a-poseidon-maritime-patrol-aircraft |archive-date=10 July 2018}}</ref> By July 2023, these had been delivered, and the P-3's were withdrawn from service.<ref>{{Cite web |date=2023-07-01 |title=Defence Force's new $2b aircraft take to the sky |url=https://www.rnz.co.nz/news/national/493004/defence-force-s-new-2b-aircraft-take-to-the-sky |access-date=2023-07-10 |website=[[RNZ]] |language=en-nz}}</ref>

'''{{NOR}}'''

* [[Royal Norwegian Air Force]] - 7 P-3B with two upgraded to P-3N, 4 P-3C operated by [[No. 333 Squadron RNoAF|333 Squadron]] from 1969 to 2023.<ref>{{cite news |title=Kl. 13:33 tok P-8 Poseidon over stafettpinnen |website=forsvaret.no |url=https://www.forsvaret.no/aktuelt-og-presse/aktuelt/p-8-poseidon-tar-over-stafettpinnen |access-date=1 July 2023}}</ref><ref>{{Cite web |title=Lockheed P-3C/N Orion Maritime Patrol Norwegian Air Force |url=https://www.seaforces.org/marint/Norwegian-Navy/AVIATION/P-3N-Orion.htm |access-date=2023-07-10 |website=www.seaforces.org}}</ref><ref>{{Cite web |last=Saballa |first=Joe |date=2023-05-31 |title=Norway to Retire P-3 Orion Fleet After 54 Years |url=https://www.thedefensepost.com/2023/05/31/norway-retire-orion-fleet/ |access-date=2023-07-10 |website=The Defense Post |language=en-US}}</ref> Formerly based at [[Andøya Air Station]].
'''{{POR}}'''
*[[Spanish Air and Space Force|Portuguese Air Force]] - 6 former RAAF P-3Bs upgraded to P-3Ps in the late 1980s and retired in October 2011.<ref name=":2" /><ref name=":3" /> They were replaced by Dutch P-3 Orion. 
'''{{ESP}}'''
*[[Spanish Air and Space Force]] – Two P-3A HWs, four P-3B ( ex-Norway) upgraded to P-3M, based at [[Morón Air Base]]. Operated from 1971 to 16 December 2022.<ref>{{cite news |title=El Ejército del Aire despide a su último P-3 Orion tras casi medio siglo en servicio |url=https://www.infodefensa.com/texto-diario/mostrar/4111661/ejercito-aire-despide-ultimo-p-3-orion-casi-medio-siglo-servicio |access-date=15 January 2023}}</ref><ref name=":1" />
'''{{THA}}'''
*[[Royal Thai Navy]] – two P-3Ts (designated '''B.TPh.2B''' ({{langx|th|บ.ตผ.๒ข}})), one VP-3T, one UP-3T ('''B.TPh.2A''' ({{langx|th|บ.ตผ.๒ก}}));<ref>{{Cite web |title=Thai Military Aircraft Designations |url=https://designation-systems.net/non-us/thailand.html |access-date=2025-03-20 |website=designation-systems.net}}</ref> based at [[U-Tapao Royal Thai Navy Airfield]] (102 Sqn). Operated from 1995 to 2014.

===Civilian operators===

====United States====

*[[Buffalo Airways]] – one P-3A, Aerial firefighting|Waterbomber; Buffalo Airways USA Inc - N922AU<ref name="faa">{{Cite web|url=https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?NNumbertxt=922AU|title=FAA Registry - Aircraft - N-Number Inquiry|website=registry.faa.gov|access-date=28 October 2020}}</ref><ref>{{Cite news|url=http://fireaviation.com/2014/03/19/buffalo-purchases-a-p3/|title=Buffalo purchases a P3|work=Fire Aviation|access-date=28 December 2017|language=en-US}}</ref>
*[[National Oceanographic and Atmospheric Administration]] (NOAA) – two WP-3Ds flown by NOAA Commissioned Corps officers, previously based at [[MacDill AFB]], now based at [[Lakeland Linder International Airport]], Florida
*[[National Aeronautics and Space Administration]] – one ex-USN P-3B; based at [[NASA]]'s [[Wallops Flight Facility]], Virginia, used for low altitude heavy lift airborne science missions, modified to support passive microwave instruments, such as NOAA's Polarimetric Scanning Radiometer (PSR), NASA's 2-DSTAR, and the Jet Propulsion Laboratory (JPL) polarimetric scatterometer (POLSCAT) instruments.<ref>Eastmunt, Catherine. [http://wacop.wff.nasa.gov/LAAPBDesc.cfm "P-3B Description."] {{webarchive|url=https://web.archive.org/web/20090611084744/http://wacop.wff.nasa.gov/LAAPBDesc.cfm |date=11 June 2009 }} ''Wallops Flight Facility: NASA''. Retrieved: 14 July 2010.</ref>
*[[United States Department of Homeland Security]] / [[U.S. Customs and Border Protection|Bureau of Customs and Border Protection]] / [[CBP Air and Marine Operations|Office of Air and Marine]] – eight P-3 AEWs; based at [[Naval Air Station Corpus Christi|NAS Corpus Christi, Texas]], and [[Cecil Airport|Cecil Field]] and [[Naval Air Station Jacksonville|NAS Jacksonville]], Florida. Used for [[United States Border Patrol|border patrol]] and [[anti-drug]] duties. Former USN aircraft, modified and equipped with the same [[airborne early warning]] radar as fitted to the [[E-2 Hawkeye]].<ref>[http://www.cbp.gov/xp/cgov/border_security/air_marine/air/aviation_asset/orion_p3b.xml "DHS Air Assets P-3 AEW: Lockheed Orion P-3B AEW."] {{webarchive|url=https://web.archive.org/web/20091029162504/http://www.cbp.gov/xp/cgov/border_security/air_marine/air/aviation_asset/orion_p3b.xml |date=29 October 2009 }} ''cbp.gov,'' 11 March 2009. Retrieved: 14 July 2010.</ref>
*United States Department of Homeland Security / Bureau of Customs and Border Protection / Office of Air and Marine – 8 P-3 LRTs (Long Range Tracker). Former USN aircraft also based at NAS Corpus Christi, Texas, and Cecil Field, Jacksonville, Florida. Normally operate in tandem with P-3 AEW aircraft.<ref>[http://www.cbp.gov/xp/cgov/border_security/air_marine/air/aviation_asset/orion_p3_lrt.xml "DHS Air Assets P-3 LRT: Lockheed Orion P-3B AEW."] {{webarchive|url=https://web.archive.org/web/20091029162605/http://www.cbp.gov/xp/cgov/border_security/air_marine/air/aviation_asset/orion_p3_lrt.xml |date=29 October 2009 }} ''cbp.gov,'' 11 March 2009. Retrieved: 14 July 2010.</ref>
*[[MHD-ROCKLAND Services, Inc.]] – 5 former RAAF AP-3Cs. Aircraft are FAA Registered as L285D, and based in Keystone Heights, Florida.<ref>{{Cite web|url=https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?nNumberTxt=N665bd|title = Aircraft Inquiry}}</ref>
*[[Airstrike Firefighters]] – 1 former [[Aero Union]] Tanker 23, with plans for 6 more P-3s.<ref>[http://fireaviation.com/2018/08/24/colorado-signs-cwn-contract-for-p-3-air-tankers "Colorado signs CWN contract for P-3 air tankers" //] {{Webarchive|url=https://web.archive.org/web/20180826113434/http://fireaviation.com/2018/08/24/colorado-signs-cwn-contract-for-p-3-air-tankers/|date=26 August 2018}}, accessed 28 August 2018 at [[Fire Aviation]].</ref>

===Former civilian operators===
====United States====
*[[Aero Union]] – eight ex-USN P-3A; aircraft based at [[Chico Municipal Airport]] in [[Chico, California|Chico]], California and converted into [[aerial firefighting]] platforms.<ref>[http://www.aerounion.com/#0#ato/firefighting.asp "Firefighting."] {{Webarchive|url=https://web.archive.org/web/20071005125205/http://www.aerounion.com/ |date=5 October 2007 }} ''aerounion.com,'' 2003. Retrieved: 14 July 2010.</ref> Aero Union shut down and put its Orions up for auction in 2011.<ref name="auto"/>