Quinnlan is of Irish origin, derived from the surname Ó Cuinn, which translates to 'descendant of Conn'. This name is associated with the ancient High King of Ireland, Conn of the Hundred Battles. Quinnlan gained popularity as a given name in recent decades and is considered unisex.
Quinnlan saw a notable fluctuation in its popularity over the years, with peaks in 2003 and 2011 at 6 births each, followed by periods of decline to 5 births in subsequent years. Despite these variations, the name maintained a steady presence with a total of 27 births from 2003 to 2012.