Tom Clancy's Rainbow Six 3: Raven Shield is a 2003 tactical first-person shooter video game developed by Red Storm Entertainment and published by Ubi Soft for Microsoft Windows and Mac OS X. It is the third entry in the Rainbow Six series. The game's plot follows Rainbow, a secret international counterterrorist organization, as they respond to a wave of terrorist attacks threatening South America.

Tactical shooter is a sub-genre of first- and third-person shooters, associated with using strategy, planning, and tactics in gameplay, as well as the realistic simulations of ballistics, firearm mechanics, physics, stamina, and low time to kill. Dating back to strategy games from the late 1980s, the genre first rose to prominence in the late 1990s with the releases of several well-received tactical shooters. The popularity of the genre saw a decline in the late 2000s as fast-paced "arcade"-like action shooters rose to prominence, it has seen a revitalization since the mid-2010s with the successful releases of several modern tactical shooters.