James, Jim, or Jimmy Peacock may refer to:
James Peacock (naval officer) (died 1653), English naval officer James Peacock (architect) (1735/1738–1814), English architect and surveyor Jim Peacock (footballer) (1871–after 1896), English footballer James Peacock (anthropologist) (born 1937), American anthropologist Jim Peacock (1937–2025), Australian molecular biologist Jamie Peacock, English professional rugby league player