PA3
# PA3

PA3 may refer to:

* ALCO PA-3, a diesel locomotive
* Paranormal Activity 3, a 2011 American horror film
* Pennsylvania Route 3
* Pennsylvania's 3rd congressional district
* Pitcairn PA-3 Orowing, a biplane
* The PA3, a type of rolling stock used on the PATH train in New York and New Jersey
* PA3 key, on the IBM 3270 keyboard
