Meaning and name origin
Ag \ag\ as a girl's name is of Greek origin, and the meaning of Ag is "good, honorable; pure, holy". Ag is a variant of Agatha (Greek): Latin form of the Greek name Agathe, from the feminine form of "agathos". Also a variant of Agnes (Greek): the popular Saint Agnes (fourth century) was a young Roman virgin martyred by the Roman Emperor Diocletian.
Ag is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).