The surname "Rourke" is of Irish origin, derived from the Gaelic name "O'Ruairc," which means "descendant of Ruairc." The name is associated with the ancient Irish clan that ruled parts of Connacht in western Ireland. Rourke is a relatively common surname in Ireland and among the Irish diaspora, particularly in countries like the United States and Canada. Variations of the name can include "O'Rourke" and "Rourk." The surname has historical significance, with notable figures in Irish history bearing the name.