PA1
# PA1

PA1 or PA-1 may refer to:

* Pad Abort Test 1, a 1963 Apollo test flight
* Pad Abort 1 (Orion), a 2010 Orion test flight
* Pennsylvania's 1st congressional district
* Pennsylvania state route 1, a former state highway near Philadelphia
* U.S. Route 1 in Pennsylvania
* Muhammed Akbar Khan, Pakistan Army general
* ALCO PA, train locomotive
* The PA1, a type of rolling stock used on the PATH train in New York and New Jersey
* PA-1 (cell line), a human ovarian cancer cell line
* PA1 key, on the IBM 3270 keyboard
