PLA may also mean:
- Pamela Anderson, a Canadian actress, sex symbol and glamour model.
- The Playboy Enterprises stock symbol
- The ProLife Alliance, a minor political party in the United Kingdom
- Peace, Love and Anarchy
- Podvodnaya Lodka Atomnaya, the Russian designation for a nuclear-propelled attack submarine (Western equivalent: SSN)
- Title of song by Robert Wyatt
- Professional Landscape Architect- a landscape architect who is licensed or registered in a certain state may use the PLA acronym after their name in business communications.