James Moriarty may refer to:
People James Moriarty (bishop) (1936–2022), Bishop Emeritus of the Roman Catholic Diocese of Kildare and Leighlin James Moriarty (cyclist) (born 2001), Australian road and track cyclist James F. Moriarty (born 1953), United States diplomat and career foreign service officer James F. Moriarty (USMC) (1896–1981), United States Marine Corps general James R. Moriarty (born 1946), American lawyer noted for mass torts against major corporations Jim Moriarty (born 1953), New Zealand actor Jim Moriarty (luger) (born 1941), American Olympic luger
Characters Count Jim Moriarty, fictional character from the 1950s BBC Radio comedy The Goon Show Professor Moriarty, fictional character and the archenemy of the detective Sherlock Holmes