ECP may refer to:
- East Coast Pig, an animal
- East Coast Pinoy, slang for Philipan of the East Coast
- East Coast Powder, 'china white' heroin from the east U.S.
- Engineering Change Proposal, a term used in Air Force contracts
- Entry control point, a term related to security
- Extreme Corporal Punishment, a fictional English hardcore punk band played by the real American band Eight Bucks Experiment in the movie SLC Punk!
- European Commercial Paper, a term used in Finance
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