Origin: Latin, English, Arabic
Meaning: an occupational surname referring to someone who was either a dean or worked for one, a dean being the ecclesiastical head of a cathedral. It comes from Latin decanum meaning "ten", referring to someone who was in charge of ten subordinates. Dean is also used to refer to the head of a university or college.
It also comes from Middle English dene meaning "valley".
Dean could also be a variant spelling of Deen or Dīn meaning "religion".