The origin of surname Crespo is the region of Castilla, an important Christian kingdom of Spain.

Crespo's last name originates from a nickname derived from the physical characteristics or personal attributes of an individual, in this case the name is derived from the crisp Spanish word "Crispus", meaning "curly or wavy hair.

Some variations of this surname are: Crespo, Crespo, Crespo, Crespi, Crest and others.