McMahon, or "Son of Bear" in Irish Gaelic, is the family name of the following persons:

Paul Levesque aka Triple H (b. 1969) wrestler and husband of Stephanie.

The McMahon family of World Wrestling Entertainment fame:

Shane McMahon (b. 1970), son of Vincent K. and Executive President of WWE Global Media.

Jim McMahon (born 1959), American football player

Andrew McMahon (born 1982), of Jack's Mannequin and Something Corporate

Don McMahon (1930–1987), Major League Baseball pitcher

Julian McMahon (born 1968), actor, the third son of former Australian Prime Minister William McMahon

Brien McMahon (born 1903), Democratic Senator

Marissa Mazzola-McMahon (b. 1973), wife of Shane.

McMahon Act or the Atomic Energy Act of 1946.

Roderick James "Jess" McMahon Boxing and Wrestling promoter, and father of Vincent James McMahon and grandfather of current chairman Vincent Kennedy McMahon.

Brigitte McMahon (born 1967), Swiss Triathlete

Jennifer McMahon (born 1968), American novelist

Geraldine McMahon, British-born harpist and singer of Irish descent

James McMahon, American amateur astronomer

Henry McMahon (musician), Irish musician

Mike McMahon, a disambiguation page

Kevin McMahon (born 1972), American hammer thrower

Brian McMahon (born 1961), Canadian coxswain

Ed McMahon (born 1923), entertainer known for his work on The Tonight Show Starring Johnny Carson

Sir Henry McMahon (1862–1949), British soldier and High Commissioner in Egypt

Sir William McMahon (1908–1988), politician, 20th Prime Minister of Australia, father of Julian

Robert McMahon, Lufthansa cargo foreman and Lufthansa heist suspect

Vincent J. McMahon, Professional wrestling promoter and founder of Capitol Wrestling Corporation and the World Wide Wrestling Federation.

Vincent Kennedy McMahon (b. 1945), Chairman of the Board, and majority shareholder of World Wrestling Entertainment, Inc.

Linda McMahon (b. 1948), wife of Vincent K. and CEO of WWE.

Stephanie McMahon (b. 1976), daughter of Vincent K. and Senior Vice President of Creative Writing for WWE.

McMahon-Hussein Correspondence, an exchange of letters during World War I concerning the fate of the Middle East.

McMahon Line, a border between the Tibet and India agreed to at the 1914 Simla Convention

McMahon system, a tournament pairing system invented for go competitions.