Cumin is a surname.

As an Irish surname, it is anglicised from Irish Gaelic surname Ó Comáin.

Notable people with the surname include:

Patrick Cumin (1695–1776), senior clergyman in the Church of Scotland William Cumin (?– 1159), Bishop of Durham and Lord Chancellor of Scotland William Cumin (obstetrician) (?–1854), Professor of Obstetrics and Gynaecology at the University of Glasgow

See also Comyn (surname)