There are several people named James Renwick.

• Jim Renwick (1953— ), Scottish rugby player
• James Alexander Renwick (??–1984), Canadian politician
• James Renwick (martyr) (1662–1688), Scottish Covenanter
• James Renwick (physicist) (1790–1863), English-American scientist and engineer
• James Renwick, Jr. (architect) (1818–1895), son of the physicist
• James Renwick (Iowa politician), Mayor of Davenport, 1869