The term Q may refer to:
- The character Q, played by John de Lancie.
- The character Q2, played by Keegan de Lancie.
- The character Q (2), played by Corbin Bernsen.
- The female Q, played by Suzie Plakson.
- The Q known as Quinn, played by Gerrit Graham.
- The Q Continuum.
- Planet Q, a Federation colony.
- One of the TNG episodes:
- "Q Who?"
- "Deja Q"
- "QPid"
- "True-Q"
- The DS9 episode "Q-Less"
- One of the VOY episodes:
- "The Q and the Grey"
- "Q2"
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