Cannon is a surname of Gaelic origin: in Ireland, specifically Tir Chonaill (Donegal) (North West Ireland).
It is also a Manx surname, where it arose from the Goidelic "Mac Canann" meaning "son of a whelp or wolf", related to the Anglo-Irish "Mac Connon", "Connon" and similar names.
[1] People with the surname include: