The name Cullen is of Scottish origin and means "Back Of A River." The origin is the culture in which the name originated, or in the case of a word--the language in which it most appears.
Scottish surname used for families from Cullen, Scotland. Fictional vampire family from the popular novel series "Twilight" by Stephenie Meyers. Also an Irish name, from MacCullen. Possibly from a first name meaning 'holly'.