Star Soldier[a] is a shoot 'em up video game developed and published by Hudson Soft for the Nintendo Entertainment System and the MSX.

The player pilots the starship "Caesar", traveling through space stations occupied by powerful supercomputers known as "Starbrains" who threaten the galactic empire.

It was ported to the Game Boy Advance in 2004 in Japan as part of the Famicom Mini series, and to the Wii's Virtual Console in the Japanese and North American regions in July 2007.

[10] Star Soldier is a vertically scrolling shooter where the player controls the pilot and space fighter Caesar in a ship.

On March 1, 2005, Hudson Soft released the Japan exclusive mobile game Enfu 2: Revival Messiah with Caesar as a playable character alongside Bomberman.

In 2021, Konami announced a contest encouraging indie developers to make games based on some of its classic series, including Star Soldier.