James McMahon
James McMahon may refer to:
Politics
- James McMahon (Canadian politician), Ontario, Canada doctor and politician
- James [Leslie McMahon] or Les McMahon, Australian politician
- James O'Brien McMahon or Brien McMahon, United States senator
- Jim McMahon (politician), British politician
Others
- James McMahon (priest), Irish-born priest
- James McMahon (astronomer), American amateur astronomer
- James McMahon (businessman), Irish-Australian businessman
- James McMahon (mathematician), American educator and mathematician
- James E. McMahon, United States Attorney in South Dakota
- Jim McMahon, American football player
- James MacMahon, Australian impresario, of MacMahon brothers