The origin of the name Arias is Spain, Galicia, and derives from kings Swabians.

Although people were originally known only by their first names, it became necessary to adopt a second name to identify due to population growth.

The most common type of family name found in the region was the surname that derives from the name of the father.
During the Middle Ages the patronymic system adopted for surnames.
Many Spanish surnames are influenced Germanic and Arabic words or names of places because of the occupation of both cultures in a period of time.

The name derives from the name Ares Arias, Aria or Arius.

Some variations of this surname are: Arias, Aryanizing, Areas, Ares and others.