Plan 9

Plan 9 may refer to:

• Plan 9 from Outer Space, a 1959 science fiction film directed by Ed Wood, Jr.
• Plan 9 from Outer Space (video game), based on the film

Music:

• Plan 9 (band), a psychedelic rock band from Rhode Island
• Plan 9 (surf band), a surfbeat-band band from Germany
• "Plan 9", a song on the album Gorgeous by electronica band 808 State
• "Plan 9 Channel 7", a song on the 1979 album Machine Gun Etiquette by punk group The Damned
• Plan 9 Records, an independent record label that was owned by Glenn Danzig of Misfits

Operating systems:

• Plan 9 from Bell Labs, an operating system developed by Bell Laboratories as Unix's successor
• Plan 9 from User Space, a port of many Plan 9 from Bell Labs libraries and applications to Unix-like operating systems

Plan Nine may refer to:

• Plan Nine (band)
• Plan Nine Publishing
• The Plan Nine EP