PW
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PW or pw may stand for:
- Palau, an island nation in the Pacific Ocean; Palau's postal abbreviation is PW
- an abbreviation for password
- Pauly-Wissowa, a German encyclopedia of classical scholarship
- Petawatt, a unit of power
- Picowatt, a unit used for measuring noise levels, commonly abbreviated pW
- Piggly Wiggly, a U.S. supermarket chain
- Politechnika Warszawska, the Warsaw University of Technology, in Poland
- Power window, an automobile window which is raised and lowered by a switch
- the IATA code for Precision Air based in Tanzania
- PricewaterhouseCoopers, an international accounting and business consulting firm
- Prisoner of war, a soldier who is imprisoned by an enemy, more commonly abbreviated P.O.W.
- Protest Warrior, a movement of primarily conservatives and libertarians, counter-protesting mostly anti-war activists and anarcho-communistic groups.
- Providence and Worcester Railroad Template:Reporting mark
- Pseudo-wire, an emulation of a native service over a Packet Switched Network.
- Publishers Weekly, a magazine covering the book publishing industry