Warhammer 40,000: Dawn of War III is an upcoming video game set to release for Microsoft Windows this 2017. This real-time strategy game is presently being produced by Sega and Relic Entertainment with Games Workshop, who created the Warhammer 40,000 universe, as their partner. In the Dawn of War series, this is the first new release ever since the Dawn of War II: Retribution (2011) and is the third complete title.

The players will be able to play the Orks, the Eldar and the Space Marines of the Blood Ravens in the initial races. The developers decided to use traditional RTS basebuilding again, which was first seen in the first game they produced along with its expansions. The game also has bigger walker units, such as the Gorkanauts for the Orks, Wraithknights for the Eldar and Imperial Knights for the Space Marines.