WMA is a three-letter abbreviation with multiple meanings, as described below:

• Windows Media Audio, a digital audio file format created by Microsoft
• Weighted moving average, in technical analysis
• World Medical Association (founded 1947), association of physicians
• 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.
• 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 Historical European martial arts