James Mortimer may refer to: James Mortimer (chess player) (1833–1911), American/British chess player, journalist, and playwright James Mortimer (dogshow judge) (1842–1915), British dogshow judge Jim Mortimer (1921–2013), British trade unionist and General Secretary of the Labour Party William James Mortimer (died 2010), publisher, president and editor of the Deseret News James Mortimer (hurdler) (born 1983), New Zealand hurdler James Mortimer, a character in The Hound of the Baskervilles