PLZ may refer to:
- Abbreviation for "please", commonly used in internet slang.
- Abbreviation for Postleitzahl, which is German word for postal code
- ISO 4217 code for Polish złoty (1950–1994), now replaced with PLN
- Port Elizabeth Airport, IATA airport code
- A type of account on DeviantART, where it is an empty account with a smiley/picture, and is mostly used as a user-generated emote on the DeviantART messaging network.
- A business law firm in Toronto, Ontario, Canada called Porco Levy Zavet LLP (PLZ Law)