Cotman is the surname of the following people:
Aljaž Cotman (born 1994), Slovenian football goalkeeper Carl Cotman, American neurologist and neuroscientist A British family of artists John Sell Cotman (1782–1842), English marine and landscape painter, etcher, illustrator and author Miles Edmund Cotman (1810–1858), English artist, son of John Sell John Joseph Cotman (1814–1878), English landscape painter, son of John Sell Thomas Cotman (1847–1925), English architect and painter, nephew of John Sell Frederick George Cotman (1850–1920), English landscape and portrait artist, nephew of John Sell and brother of Thomas Cotman