James McMahon

James McMahon may refer to:

Politics

 * James McMahon (Canadian politician) (1830–1909), Ontario, Canada doctor and politician
 * James Leslie McMahon or Les McMahon (1930–2015), Australian politician
 * James O'Brien McMahon or Brien McMahon (1903–1952), United States senator
 * Jim McMahon (politician) (born 1980), British politician

Others

 * James McMahon (priest) (1817–1901), Irish-born priest
 * James McMahon (astronomer), American amateur astronomer
 * James McMahon (mathematician) (1856–1922), American educator and mathematician
 * James E. McMahon, United States Attorney in South Dakota
 * Jim McMahon (born 1959), American football player