Mission X or X-mission may refer to:

Arts and entertainment

• Mission X (game), a 1983 videogame from Mattel; see List of Intellivision games

Music

• Mission No. X (album), a 2005 album by U.D.O.
• "X-Mission" (song), a song from the 2015 film Point Break, a cover of the song "Give It Away" from the album The World's On Fire by Man on a Mission

Television

• Mission X (TV show), an Indonesian TV show, an adaptation of Running Man (런닝맨); see List of Running Man international episodes
• Mission X (Philippine TV series), a Philippine TV show (2001-2003), that won the 2002 PMPC Star Award for Best Public Service Program
• "Mission X!" (TV episode), an episode of Chousei Kantai Sazer-X
• 'Mission X' (TV segment), a challenge in the reality show Bigg Boss (Malayalam season 5)

Vehicular and transportation

• Mission X "Hat Trick", a sales demonstration showcase mission of the Lockheed Martin X-35B prototype stealth fighter
• Porsche Mission X, an all-electric concept car

Other uses

• XMission, an internet service provider (ISP) in Utah, USA
• Mission X - Train Like an Astronaut, a training course at the Cyprus Space Exploration Organisation