Editing M110 howitzer (section)

==Operators==
[[File:M110 operators.png|thumb|upright=1.6|Map with M110 operators in blue and former operators in red]]
[[Image:M110 Column.JPEG|thumb|right|U.S. Army M110A2 howitzers in a staging area prior to transport, [[Port of Antwerp]], 1984]]

===Current operators===
*{{BHR}}: [[Royal Bahraini Army]] 13 as M110A2 from Netherlands delivered in 1994,<ref name="sipri">{{cite web|url=http://armstrade.sipri.org/armstrade/page/trade_register.php|author=Stockholm International Peace Research Institute|title=Transfers and licensed production of major conventional weapons|access-date=2011-12-10}}</ref> 25 as M110A2 from US delivered in 1996.<ref>{{cite web|url=http://www.dsca.mil/programs/eda/search.asp |author=Defense Security Cooperation Agency |title=Excess Defense Articles |access-date=2011-12-10 |url-status=dead |archive-url=https://web.archive.org/web/20120114174201/http://www.dsca.mil/programs/eda/search.asp |archive-date=2012-01-14 }}</ref>
*{{CYP}}: [[Cypriot National Guard]] 8 as M110A2<ref>{{Cite web |title=Εξοπλισμός Εθνικής Φρουράς (Κύπρος) |url=https://www.ellinikos-stratos.com/stratos/cyprus |access-date=2023-07-03 |website=www.ellinikos-stratos.com}}</ref>
*{{GRC}}: [[Hellenic Army]] 145 as M110A2.
*{{EGY}}: [[Egyptian Army]] Received 144 as M110A2 as aid in 1996.<ref>{{cite web | work= Federation of American Scientists |url= https://fas.org/asmp/library/asm/asm33table2.html |title= Deals in the Works | access-date= 29 March 2011}}</ref>
*{{IRN}}: [[Iran Army]] 30 M110.
*{{JOR}}: [[Jordanian Armed Forces]] 120 as M110A2.
*{{MAR}}: [[Moroccan Army]] 60 as M110A2.
*{{PAK}}: [[Pakistan Army]] 140 in service as of 2021.
*{{TWN}}: [[Republic of China Army]] 70 M110A2 as of 2023<ref name="IISS2023">{{cite book |last1=International Institute for Strategic Studies |title=The Military Balance 2023 |date=February 2023 |publisher=Routledge, Chapman & Hall, Incorporated |isbn=978-1-032-50895-5 |url=https://books.google.com/books?id=U86kzwEACAAJ |access-date=19 August 2023 |language=en |author1-link=International Institute for Strategic Studies }}</ref>{{rp|291}}<ref name="Janes">{{cite book |last1=Foss |first1=Christopher F. |title=Jane's Armour and Artillery 2005-2006 |date=2005 |publisher=Jane's Information Group |isbn=978-0-7106-2686-8 |url=https://books.google.com/books?id=e8_HAAAACAAJ |access-date=19 August 2023 |language=en}}</ref>{{rp|1021}}
*{{TUR}}: [[Turkish Army]] currently phasing out 219 as M110A2 in favor of [[T-155 Fırtına]]

===Former operators===
*{{BEL}}: [[Belgian Army]] 11 M110A2 between 1972 and 1993 used by the 20th Artillery Regiment ([[Belgian Forces in Germany]]).
*{{GER}}: [[German Army]] M110A2 until 1993.
*{{ISR}}: [[GOC Army Headquarters|Israeli Army]] 36 as M110, retired in 1990s.
*{{ITA}}: [[Italian Army]] used M110A2s, phased out by 1998.
*{{JPN}}: [[Japan Ground Self-Defense Force]] 91 as M110A2. As of 2023, approximately 10 M110A2s were in active, owned by 104th Artillery Battalion of 4th Artillery Group (Mechanized) in [[Hokkaido]].<ref>{{cite web |last1= Yusuke |first1= Tsuge | work= Vehicle news |url= https://trafficnews.jp/post/125248/2 |title= 陸自最大サイズの巨砲「203mm自走りゅう弾砲」まもなく退役 進む"火砲リストラ" 最後の部隊は | access-date= 28 September 2023}}</ref> They retired in March 2024 and the battalion was disbanded.<ref>{{cite web | work= Motor-Fan CAR |url= https://motor-fan.jp/mf/article/214490/ |title= 昭和の名戦車「74式戦車」ついに完全引退！ 2024年3月をもって本州から戦車部隊が消滅【自衛隊新戦力図鑑】 | access-date= 17 April 2024}}</ref>
*{{KOR}}: [[Republic of Korea Army]] Operated M110 since 1961. Retired in the late 2000s after being replaced by [[K9 Thunder]].<ref>{{Cite book |last=Bak |first=Dongchan |url=http://medcmd.mil.kr/user/imhc/upload/pblictn/PBLICTNEBOOK_202105270240172800.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://medcmd.mil.kr/user/imhc/upload/pblictn/PBLICTNEBOOK_202105270240172800.pdf |archive-date=2022-10-09 |url-status=live |title=Korean War : Weapons of the United Nations |publisher=Ministry of Defense Institute for Military History |date=March 2021 |isbn=979-11-5598-079-8 |location=Republic of Korea |pages=108–110 |language=Korean}}</ref>
*{{flagcountry|South Vietnam}}: [[Army of the Republic of Vietnam]].
*{{NLD}}: [[Royal Netherlands Army]] M110A1 and M110A2, replaced by the M109 in the 1990s
*{{SPN}}: [[Spanish Army]] as 64 M110A2, deployed in divisional fire support regiments until 2009.
*{{UK}}: [[British Army]] as M110A2 firing high explosive and nuclear shells only. (The [[FV433 Abbot SPG]], the [[M109 howitzer|M109A2]], and the M110A1 were replaced by the [[AS-90]] in the early-mid-1990s.) Used in [[Operation Granby]]/[[Gulf War]].<ref name="youtube-gulf-war-1991"/>
*{{USA}}: Used by [[United States Army]] and [[United States Marine Corps]], M110A2s retired in 1994.