Editing Silicon Valley (section)

===Notable companies===
[[File:Adobe World Headquarters.jpg|thumb|[[Adobe World Headquarters]] in [[Downtown Historic District (San Jose, California)|Downtown San Jose]]|alt=]]
[[File:EBay headquarters 2018.jpg|thumb|right|[[eBay]] in [[San Jose, California|San Jose]]]]
[[File:PayPal_San_Jose_Headquarters.jpg|thumb|right|[[PayPal]] in San Jose]]
[[File:Cisco Systems Headquarters (Building 10), Cisco San Jose Main Campus.jpg|thumb|right|[[Cisco Systems|Cisco]] in the [[Rincon de los Esteros, San Jose|Golden Triangle]]]]
[[File:Seagate Headquarters Fremont.jpg|thumb|right|[[Seagate Technology]] in [[Fremont, California|Fremont]]]]
[[File:Western Digital Headquarters.jpg|thumb|right|[[Western Digital]] in San Jose]]
{{See also|Category:Companies based in Silicon Valley}}
<!-- DO NOT ADD your pet company to this list if it is NOT notable. The only companies that belong here are ones which are recognized by a great majority of people and/or have a great influence on the marketplace. Your consulting firm that employs two people doesn't meet the criteria. If you want to add a company here, discuss it on the Talk page FIRST. Any additions that are added without discussing first will be reverted WITHOUT DISCUSSION.-->

Thousands of [[high-tech|high technology]] companies are headquartered in Silicon Valley. Among those, the following are in the [[Fortune 1000]]:

{{Columns-list|
*[[Adobe Inc.]]
*[[AMD]] 
*[[Agilent Technologies]]
*[[Alphabet Inc.]], includes Google 
*[[Apple Inc.]]
*[[Applied Materials]]
*[[Block, Inc.]]
*[[Broadcom Inc.]]
*[[Cadence Design Systems]]
*[[Cisco Systems]]
*[[eBay]]
*[[Electronic Arts]]
*[[HP Inc.]]
*[[Intel]]
*[[Intuit]]
*[[Intuitive Surgical]]
*[[Juniper Networks]]
*[[KLA Corporation]]
*[[Lam Research]]
*[[Meta Platforms]], includes Facebook
*[[NetApp]]
*[[Netflix, Inc.]]
*[[Nvidia]]
*[[PayPal]]
*[[Salesforce]]
*[[Sanmina Corporation]]
*[[Seagate Technology]]
*[[ServiceNow]]
*[[TD Synnex]]
*[[Synopsys]]
*[[Western Digital]]
}}

Additional notable companies headquartered in Silicon Valley (some of which are defunct, subsumed, or relocated) include:

{{Columns-list|
*[[23andMe]]
*[[3Com]] (acquired by [[Hewlett-Packard]])
*[[8x8]]
*[[Actel]] (acquired by [[Microsemi]])
*[[Actuate Corporation]]
*[[Adaptec]] (acquired by [[PMC-Sierra]])
*[[Aeria Games and Entertainment]]
*[[Altera]] (acquired by [[Intel]])
*[[Amazon (company)|Amazon]]'s [[A9.com]]
*Amazon's [[Lab126]].com
*[[Amdahl Corporation|Amdahl]] (acquired by [[Fujitsu]])
*[[Atari, Inc.|Atari]] 
*[[Atmel]] (acquired by [[Microchip Technology]])
*[[Brocade Communications Systems]] (acquired by [[Broadcom Inc.|Broadcom]])
*[[Be Inc.]] (acquired by [[Palm Inc.]])
*[[BEA Systems]] (acquired by [[Oracle Corporation]])
*[[Cypress Semiconductor]] (acquired by  [[Infineon Technologies]])
*[[Extreme Networks]]
*[[Fairchild Semiconductor]] (acquired by [[onsemi]])
*[[Flextronics|Flex]] (formally Flextronics)
*[[Foundry Networks]] (acquired by [[Brocade Communications Systems]])
*[[Geeknet]] ([[Slashdot]])
*[[GlobalFoundries]] (moved to [[Malta, New York]])
*[[GoPro]]
*[[Harmonic, Inc.]]
*[[Hitachi Data Systems]]
*[[Hitachi Global Storage Technologies]] (acquired by Western Digital)
*[[Hewlett Packard Enterprise]] (moved to [[Spring, Texas]])
*[[IDEO]]
*[[Informatica]]
*[[LinkedIn]] (acquired by [[Microsoft]])
*[[Lockheed Martin Space]] (now headquartered in [[Denver, Colorado]])
*[[LSI Corporation|LSI]] (acquired by [[Broadcom]])
*[[Maxtor]] (acquired by [[Seagate Technology|Seagate]])
*[[McAfee]] (acquired by [[Intel]])
*[[Memorex]] (acquired by [[Burroughs Corporation|Burroughs]])
*[[Mozilla Foundation]]
*[[Move (company)|Move, Inc.]]
*[[National Semiconductor]] (acquired by [[Texas Instruments]])
*[[Nook]] (subsidiary of [[Barnes & Noble]])
*[[Oracle Corporation]] (moved to [[Austin, Texas]])
*[[Palo Alto Networks]]
*[[Palm, Inc.]] (acquired by [[TCL Corporation]])
*[[PARC (company)|PARC]]
*[[Proofpoint, Inc.|Proofpoint]]
*[[Quantcast]]
*[[Quora]]
*[[Rambus]]
*[[Roku, Inc.]]
*[[RSA Security]] (acquired by [[EMC Corporation|EMC]])
*[[SanDisk]] (acquired by [[Western Digital]])
*[[SolarCity]] (acquired by [[Tesla, Inc.]])
*[[Sony Mobile Communications]] (U.S. subsidiary headquarters)
*[[Sony Interactive Entertainment]]
*[[SRI International]]
*[[Sun Microsystems]] (acquired by [[Oracle Corporation]])
*[[SunPower]]
*[[SurveyMonkey]]
*[[Gen Digital|Symantec]] (now part of Gen Digital and headquartered in [[Tempe, Arizona]])
*[[Syntex]] (acquired by [[Hoffmann-La Roche|Roche]])
*[[Tesla, Inc.]] (now headquartered in [[Austin, Texas]])
*[[TIBCO Software]]
*[[TiVo]] (acquired by [[Xperi]])
*[[Uber]]
*[[Verifone]] (moved to [[Coral Springs, Florida]])
*[[VeriSign]] (moved to [[Reston, Virginia]])
*[[Veritas Technologies]] (split off from [[NortonLifeLock|Symantec]])
*[[VMware]] (acquired by [[Dell Technologies]])
*[[Walmart Labs]]
*[[WebEx]] (acquired by [[Cisco Systems]])
*[[YouTube]] (acquired by [[Google]])
*[[Yelp|Yelp, Inc.]]
*[[Zoom Video Communications|Zoom]]
*[[Zynga]]
*[[Xilinx]] (acquired by [[AMD]])
}}