Quake II is a first-person shooter video game developed by id Software and distributed by Activision. It is not a direct sequel to Quake; it merely uses the name of the former game due to id's difficulties in coming up with alternative names. The soundtrack for Quake II was mainly provided by Sonic Mayhem, with some additional tracks by Bill Brown and one track Jer Sypult.

The next game released with the title Quake III Arena, is not considered to be related to Quake or Quake II as it is multiplayer focused, and has a dissimilar storyline. A direct sequel, titled Quake 4, was released for the PC (Microsoft Windows and Linux), and later for the Xbox 360 and the Macintosh. A prequel to Quake II, Enemy Territory: Quake Wars, has been produced by Splash Damage.