Corcoran is an Irish surname of Irish origin, derived from the Gaelic name Corcraoin, meaning little hollow or hollow valley. The name is believed to have originated in County Cork, Ireland, and was likely used to identify someone who lived near a hollow or valley. Over time, the name became associated with the Corcoran family, who were prominent landowners in the region. The name has been recorded in various forms throughout history, including Corcoran, Corcoran, and Corcoran.