Pennsylvania, a state of the United States of America
Papua, a province of Indonesia
Pará, a state of Brazil
Palestinian Authority
Proto-Algic (sometimes abbreviated PAc to distinguish it from Proto-Algonquian)
Proto-Athapaskan
Proto-Algonquian (sometimes abbreviated PAn to distinguish it from Proto-Algic, but usually just abbreviated PA with Proto-Algic being abbreviated PAc)
Power amplifier.
Public accountant.
Public Act.
A state of the United States. Capital: Harrisburg; largest city: Philadelphia.
An unincorporated community in Mobile County, Alabama, United States.
A suburb of Exeter, Devon, England (OS grid ref SX9294).
A hamlet in Cold Ashton parish, South Gloucestershire, Gloucestershire, England (OS grid ref ST7473).
The first, and historically largest, now defunct US railroad, a hallmark of the industrial age.