WM

WM Wm, wm, or variants may refer to:

Businesses and organizations

• Wal-Mart, an American retailing chain
• Washington Mutual, a former American savings bank (former MYSE stock symbol WM)
• Waste Management, Inc, a North American garbage company (former NYSE stock symbol WM)
• Western Maryland Railway, a former railway in the United States
• Windward Islands Airways or Winair (IATA airline code WM)
• WM Entertainment, a South Korean entertainment company

Military

• Waterloo Medal, a medal awarded to British soldiers who fought in the Waterloo campaign in 1815
• "Wehrmacht Marine", on license plates of the German Navy in World War II
• Woman Marine, a female member of the United States Marine Corps

Science and technology

Computing

• Window manager, software that controls the placement of windows on the screen
  • X window manager, a component in the X Window System
• Window Maker, a window manager for the X Window System
• Windows Media, a multimedia framework for media creation and distribution for Microsoft Windows
• Windows Messenger, a piece of software included in the Microsoft Windows XP operating system
• Windows Mobile, an operating system for Pocket PCs

Other uses in science and technology

• Waldenström's macroglobulinemia, a rare form of blood cancer
• Wave method, a model used in fluid dynamics
• White matter, a type of brain tissue
• Working memory, a part of the short-term memory

Sport

• WM formation, a formation in association football, so called because it spells out the letters when viewed from above
• WrestleMania, a professional wrestling pay-per-view event

Other uses

• William, sometimes abbreviated Wm.
• The College of William & Mary, a public research university in Virginia, US
• Worshipful Master, the head of a lodge in freemasonry
• William McKinley, 25th President of the United States