Professional Wrestling, or ProWrestling.com Discussion Forums

Prisoner of war, a soldier who is imprisoned by an enemy (also "POW")

Palau, an island nation in the Pacific Ocean; Palau's postal abbreviation is PW

Production Workshop, a student-run theater group at Brown University

An abbreviation for password

Prader-Willi Syndrome, a genetic disorder

PricewaterhouseCoopers, an international accounting and business consulting firm

Pennywise, an American punk band

Pratt & Whitney, an aircraft engine manufacturer

Protest Warrior, a movement of college students, counter-protesting anti-war activists

Publishers Weekly, a magazine covering the book publishing industry

Politechnika Warszawska, the Warsaw University of Technology, in Poland

Providence and Worcester Railroad (AAR reporting mark "PW")

Pauly-Wissowa, a German encyclopedia of classical scholarship

Piggly Wiggly, a U.S. supermarket chain

Power window, an automobile window which is raised and lowered by a switch

Pathetic Writer, A Word processor in Siag Office

Pseudo-wire, an emulation of a native service over a Packet Switched Network

Pacific Western Transportation;(PW) or (PWT) A Bus Company, based out of Toronto, with its headquarters in Calgary.

Potable water; in plumbing, "PW" is used as a rating on pipes and fittings, meaning that they can be used for potable water, and are pressure rated

Phoenix Wright; can both refer to the game Phoenix Wright: Ace Attorney and the character

Perfect World, a 3D MMORPG game developed by Beijing Perfect World.

Persistent world, a term used in online role-playing games

Pieter Willem Botha, President of South Africa from 1984-1989. Was commonly known as PW

Prince of Wales Secondary School in Vancouver, BC

The IATA code for Precision Air based in Tanzania