- Wilbraham & Monson Academy , a College-prep school in Massachusetts
- Western Manufactured Housing Communities Association (WMA) , a nonprofit trade association for owners of manufactured home communities in California.
- Windows Media Audio , a digital audio file format created by Microsoft
- Western Marble Arch , a synagogue in central London
- Weighted Moving Average , in technical analysis
- Western Martial Arts , Western Martial Arts
- World Medical Association (founded 1947), association of physicians
- World Metal Alliance (founded 1992), a community of heavy metal fans and musicians dedicated to the promotion, protection, and preservation of Heavy Metal Music
- World Music Awards
- William Morris Agency (founded 1898), literary and entertainment agents
- Wildlife Management Area
- White Male Adult - commonly used in reports by United States law enforcement personnel.
- W.M.A. , a Pearl Jam song from 1993 's "Vs" album, meaning White Male American.
- Western Martial Arts - the study of historical manuscripts to teach students the martial arts of Europe; see also Historical European Martial Arts
- Wireless Messaging API in J2ME MIDP
- Washington Metropolitan Area , the area in, and immediately surrounding, Wahington D.C.
- Wilderness Medical Associates , a company based in Portland, Maine, offering training in rescue and wilderness medicine.
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