A CRAFT file is a spacecraft file created by KSP (Kerbal Space Program), a space program building game. It contains data that describes a player's spacecraft, which was built in the in-game Vehicle Assembly Building or Spaceplane Hangar. CRAFT files are the primary files used for saving spacecrafts that designed by a player.

CRAFT files are saved in a plain text format and are typically saved to the Ships directory of the game installation. Players typically do not interact directly CRAFT files but instead use the save and load buttons in the game, which create and open the CRAFT files.