Six degrees of separation is the theory that anyone on Earth can be connected to any other person on the planet through a chain of acquaintances that has no more than five intermediaries
Six degrees or Six degrees of separation may also refer to:
- Six degrees of freedom, motion in three-dimensional space, with three translation motions (up/down, left/right, forward/back) and three rotation motions (yaw, pitch, roll)
- Six Degrees of Kevin Bacon, a trivia game that requires a group of players to connect any film actor to Kevin Bacon in as few links as possible
- SixDegrees.org, a social networking website created by Bacon based on the game, intended to link people to charities
- SixDegrees.com, a social networking website from 1997 to 2001
- Six Degrees patent, covering patterns on which modern social networking is founded
- Six Degrees Architects, an Australian architectural firm in Melbourne, Victoria