James Millar
James Millar may refer to:
- James Millar (artist), English portrait painter
- James Millar (educationalist), Scottish educationalist
- James Millar (physician), Scottish physician and editor of the Encyclopædia Britannica
- James Millar (Australian actor), Australian actor, singer and writer
- James Duncan Millar, Scottish barrister and Liberal, later National Liberal, politician
- James R. Millar, American economist
- James Millar (loyalist), Northern Irish loyalist paramilitary
- James D. Millar, American teacher, bookkeeper, businessman and politician
- James Broom Millar, British Foreign Service personnel and media executive
- James Millar (judoka), competitor in the 2009 European Judo Championships
- James Millar (skier), Paralympian who represented Australia at the Winter Olympics in 2006 and 2010