Ghost

Ghost can refer to:
 * Ghosts, the main enemy species from the Luigi's Mansion series.
 * Ghosts from the Mario Kart series, which are recordings of the player's driving performance.
 * Ghost from Super Mario Galaxy 2, a guide that the players can follow through the level.
 * The boss and enemy ghosts from Wario Land II.
 * Ghost enemies from Donkey Kong 64. They are actually Kremlings wearing bedsheets.
 * The ghost enemy from Wario Land 4.
 * The ghost, Baby Bowser's "pet" in Yoshi's Story.
 * Ghosts, ghostly Piranha Plants originally known as "Polterpiranhas" from Yoshi's Island DS.
 * Ghost, the status effect obtained from eating Boo Biscuits.
 * Ghosts, toys based on Boos that appear in Mini Mario & Friends: amiibo Challenge.
 * The Ghosts from the Pac-Man series that appear as an Assist Trophy in Super Smash Bros. for Nintendo 3DS, Super Smash Bros. for Wii U and Super Smash Bros. Ultimate.
 * Ghost T., a deceased Toad in Paper Mario: The Thousand-Year Door.
 * Additionally, there are many types of ghosts in the Mario franchise.
 * Boos are the archetypical ghost enemy of the Mario series.
 * Portrait ghosts are a major type of ghost found in Luigi's Mansion.