James Warner
James Warner may refer to:
- James Warner (aviator) (1891–1970), radio operator on the 1928 trans-Pacific flight of the Southern Cross
 - James Warner (surveyor) (1814–1891), pioneer surveyor in Queensland, Australia
 - James D. Warner (died 2009), bishop of the Episcopal Diocese of Nebraska
 - James M. Warner (1836–1897), American Civil War general
 - James K. Warner (born 1939), American neo-Nazi
 - Jim Warner (born 1954), retired ice hockey forward
 - Jimmy Warner (1865–1943), English footballer