Charles is a masculine given name predominantly found in English and French speaking countries. It is from the French form Charles of the Proto-Germanic name ᚲᚨᚱᛁᛚᚨᛉ or *karilaz, whose meaning was "free man". The Old English descendant of this word was Ċearl or Ċeorl, as the name of King Cearl of Mercia, that disappeared after the Norman conquest of England.

A given name is the part of a personal name that identifies a person, potentially with a middle name as well, and differentiates that person from the other members of a group who have a common surname. The term given name refers to a name usually bestowed at or close to the time of birth, usually by the parents of the newborn. A Christian name is the first name which is given at baptism, in Christian custom.