James Renwick may refer to:

• Jim Renwick (born 1952), Scottish rugby player
• Jim Renwick (politician) (1917–1984), politician in Ontario, Canada
• James Renwick (climate scientist), weather and climate researcher
• James Renwick (Covenanter) (1662–1688), Scottish Covenanter
• James Renwick (physicist) (1790–1863), English-American scientist and engineer
• James Renwick Jr. (1818–1895), American architect, son of the physicist
• James Renwick (Iowa politician), mayor of Davenport, 1869