Code 3 may refer to:
- Code 3 Collectibles, a scale model company
- Code 3 Response, a response mode for emergency vehicles
- Code 3 Public Safety Equipment, Inc. a model emergency lights
- Code-3 temporal pattern, a distinct evacuation tone pattern used primarily in fire alarms
- Code 3 (film), a 2025 film starring Rainn Wilson
- Code 3 (TV series), 1957 TV series produced at Hal Roach Studios
- Code 3 in sailing: see spinnaker
- Code 3, a documentary TV series following firefighters, hosted by Gil Gerard
This disambiguation page lists articles associated with the title Code 3.
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