James Mason (1909–1984) was an English actor.
James, Jim, Jimmy, or Jem Mason may also refer to:
Actors James Mason (American actor) (1889–1959), character performer from 1910s to 1950s James Mason (Australian actor), film and television actor
Politicians James Brown Mason (1775–1819), American legislator from Rhode Island James M. Mason (1798–1871), American legislator and Confederate diplomat from Virginia James W. Mason (1841–1875), African-American legislator from Arkansas James Mason (Canadian politician) (1843–1918), banker, brigadier general and senator James Mason (British politician) (1861–1929), MP for Windsor, 1906–1918 Jim Mason (Ohio politician), member Ohio House of Representatives, 1993–1998 Jimmy Mason (politician), member of the New Mexico House of Representatives James Mason (neo-Nazi) (born 1952), American neo-Nazi James Mason (burgess), Virginia planter, real estate investor and politician James Mason (New Hampshire politician), member of the New Hampshire House of Representatives
Sportspeople Footballers Jim Mason (footballer) (before 1875–after 1909), English forward for Burslem Port Vale Jimmy Mason (footballer, born 1919) (1919–1971), Scottish inside forward for Third Lanark Jimmy Mason (footballer, born 1933), Scottish midfielder
Other sportspeople Jem Mason (1816–1866), English jockey; 1839 Grand National winner James Mason (chess player) (1849–1905), British (Irish) master James Mason (cricketer) (1876–1938), English player James Mason (field hockey) (born 1947), Australian player Jim Mason (baseball) (born 1950), American MLB shortstop James Mason (golfer) (born 1951), American professional golfer James Mason (wrestler) (born 1979) British professional wrestler, former member of Team Britain
Other people James Mason (health administrator) (1864–1924), New Zealand doctor and public health administrator James O. Mason (1930–2019), American surgeon general and leader in the Church of Jesus Christ of Latter-day Saints James Cheney Mason (born 1943), American lawyer James Mason (bishop) (born 1954), Solomon Islander bishop of Hanuato'o Jim Mason (activist) (born 1940), American author and animal rights advocate James Scott Mason (1873–1912), British colonial administrator
Other uses Jim Mason, protagonist portrayed by George Raft in 1939's King of the Turf James Mason, a GWR 3031 Class British locomotive