PA4 may refer to:
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ALCO PA-4
The ALCO PA was a family of A1A-A1A diesel locomotives built to haul passenger trains. The locomotives were built in Schenectady, New York, in the United States, by a partnership of the American Locomotive Company (ALCO) and General Electric (G ...
, a diesel locomotive
* ''
Paranormal Activity 4
''Paranormal Activity 4'' is a 2012 American found footage supernatural horror film directed by Henry Joost and Ariel Schulman and written by Christopher Landon, from a story by Chad Feehan. It is the fourth installment in the ''Paranormal ...
''
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Pennsylvania Route 4
The following is a list of former state routes in Pennsylvania. These roads are now either parts of other routes or no longer carry a traffic route number. This list also includes original routes of numbers that were decommissioned and later r ...
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Pennsylvania's 4th congressional district
Pennsylvania's fourth congressional district, effective January 3, 2023, encompasses the majority of Montgomery County and most of Berks County northeast of Reading in southeastern Pennsylvania. In the 2020 redistricting cycle, the Pennsylva ...
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Pitcairn PA-4 Fleetwing II
The Pitcairn PA-4 Fleetwing II, also called the Pitcairn Fleetwing DeLuxe, and the Pitcairn PA-4 Fleetwing is a commercial mail hauling and passenger biplane.
Design and development
Ten PA-4s were built before it was re-engined with the Wright J ...
, a biplane
* PA4 paper; see
Paper size
Paper size refers to Technical standard, standardized dimensions for sheets of paper used globally in stationery, printing, and technical drawing. Most countries adhere to the ISO 216 standard, which includes the widely recognized A series ( ...
* The
PA4, a type of rolling stock used on the PATH train in New York and New Jersey
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