Spanner may refer to:
- Spanner (UK) or wrench (North America), a kind of hand tool
- Spanner, brand of prostatic stent
- Spanner (database), distributed database technology developed by Google
- Spanner (screw drive), a type of screw drive that consists of two holes in the screw head and two pins on the tool
- Spanner (Garmin program), interface for global-positioning-system receiver
- Spanner (surname)
- Spanner, fictional character in Reborn! cartoons
- Ralph Spanner, a fictional character in Round the Twist
- Schones
Titled expressive works:
- Spanner (journal), British periodical
- The Spanner, Irish periodical
- Spanners (album), 1995, by The Black Dog
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