| Acronym | Definition |
|---|
| PTPC➣Permeability Transition Pore Complex (biochemistry) |
| PTPC➣Port Townsend Paper Corporation (Port Townsend, WA) |
| PTPC➣Professional Teaching Practices Commission (Anchorage, AK) |
| PTPC➣Principal Teacher of Pastoral Care |
| PTPC➣Port Townsend Photo Club (est. 1994; Port Townsend, WA) |
| PTPC➣Pentair Technical Products China |