Falsion (ファルシオン, Falchion) is Famicom Disk System Shoot 'em up game developed and published by Konami on October 21, 1987. It was notably one of the few games making use of the Famicom 3D System.

The game is a shoot 'em up in which the player controls the movements of a flying space ship, called the Falsion, while simultaneously shooting enemy ships and trying to avoid their attacks. The goal of the game is to survive to the end of the auto-scrolling levels and defeat the boss to move on to the next level, until the sixth and final boss is defeated.

In a manner that has been compared to games like Space Harrier and Star Fox, the player's perspective is from the third person, behind the space ship, as it goes forward. Enemies, projectiles and obstacles seem to fly towards the space ship. Enemies can be attacked by shooting a rapid-firing beam weapon or homing missiles, although there is a limited supply of the latter. Randomly appearing power-ups which float around the screen for a limited time can also be collected by the player, and they either increase the ship's movement speed or replenish its missile supply. To survive, the player must avoid getting hit by enemies and obstacles or their attacks. The player can also destroy these enemies, which include other space ships, meteorites and robots.