The term Q may refer to:
- One of the various members of the Q Continuum.
- Q, played by John de Lancie.
- Q2, played by Corbin Bernsen.
- Q, later known as Quinn, played by Gerrit Graham.
- The female Q, played by Suzie Plakson.
- The Colonel Q, played by Harve Presnell.
- Q, jr., played by Keegan de Lancie.
- Judge Q, played by Lorna Raver.
- Planet Q, a Federation colony.
- One of the TNG episodes:
- The DS9 episode "Q-Less"
- One of the VOY episodes:
- "The Q and the Grey"
- "Q2"
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