Hogan is an Irish surname. If derived from the Irish Gaelic, Ó hÓgáin, it is diminutive of Og meaning "young". If it is derived from Cornish, it means "mortal". This youthful definition of the name is also reflected in the Welsh, where Hogyn means . The word Hogen means high in Dutch.
The name has been further Anglicised to the form "" in Northern Ireland.
People with the surname include: