Firaxis Games is an American video game developer founded in 1996 by Creator/SidMeier, Jeff Briggs, and Brian Reynolds upon leaving Creator/MicroProse. Now a wholly owned subsidiary of Creator/TakeTwoInteractive, the company is best known for its {{Videogame/Civilization}} series of games, though it has had notable success with other titles as well. Firaxis is based in Sparks, Maryland; Sid Meier continues to lead creative efforts there.

Jeff Briggs assumed the role of Chairman in April 2006 and left the company completely in November. In April 2007, Soren Johnson left the company and joined Creator/ElectronicArts to work on {{Videogame/Spore}} with Lead Designer Creator/WillWright. Johnson was formerly a key person for Firaxis, acting as co-designer for Civilization III and later Lead Designer on Civilization IV.

!!Games developed by Firaxis:
* VideoGame/SidMeiersAlphaCentauri
* VideoGame/SidMeiersSimGolf
* Videogame/SidMeiersPirates (2004)
* {{VideoGame/Civilization}}
** VideoGame/CivilizationCallToPower
** VideoGame/CivilizationBeyondEarth
* VideoGame/XCOMEnemyUnknown
** VideoGame/XCOM2
* VideoGame/SidMeiersStarships