PHA is an abbreviation for:
- Philadelphia Housing Authority, a municipal corporation in Philadelphia, Pennsylvania
- Polyhydroxy see polyhydroxyalkanoates, naturally occurring water-insoluble and linear polyesters produced by many bacteria as reserve materials for carbon and energy
- Potentially hazardous asteroid ( potentially dangerous asteroid )
Pha stands for:
- Jazze Pha (actually Phalon Alexander, born 1972 in Memphis, Tennessee ), an American rapper, songwriter and music producer.