Gunvalkyrie

is a third-person shooter video game developed by Smilebit and published by Sega for the Microsoft Xbox. It was released on March 19, 2002 in North America; March 21, 2002 in Japan; and May 17, 2002 in PAL regions. Set in an alternate history science fiction world where the British Empire rules Earth and various extrasolar planets, the game tasks the player with exterminating the giant insects that infest the colonies of the planet Tir na Nog. Originally in development for the Sega Dreamcast, the game was moved to the Xbox to take advantage of its improved hardware and controls.

Gunvalkyrie received mixed reviews from critics, who praised its graphics and innovation, but criticized its steep learning curve stemming from its complex controls.