Colony Wars: Red Sun (called Colony Wars III: Red Sun in North America) is a 2000 space combat simulator video game developed by Psygnosis and published by Sony Computer Entertainment for the PlayStation. It is a sequel to Colony Wars in 1997 and Colony Wars: Vengeance in 1998. Instead of being a starfighter pilot for the League of Free Worlds or the Colonial Navy, the player now assumes the role of a civilian miner-turned-mercenary.

The game was originally set for release in North America by Psygnosis in March 2000, before it was delayed a few times, once to early April, then to late April or early May, and then to 1 June after being picked up by Midway Games.