Quick answer
Regan is a boy/girl name.
Pronunciation: English /ˈɹi.ɡən/.
Meaning and history
Meaning unknown. In the chronicles of Geoffrey of Monmouth it is the name of a treacherous daughter of King Leir. Shakespeare adapted the story for his tragedy King Lear (1606). In the modern era it has appeared in the horror movie The Exorcist (1973) belonging to a girl possessed by the devil. This name can also be used as a variant of Reagan.
Notes and context
Usage: literature, english