Agatha \a-ga-tha\ as a girl's name is pronounced AG-a-thah. It is of Greek origin, and the meaning of Agatha is "good, honorable". Latin form of the Greek name Agathe, from the feminine form of "agathos". Saint Agatha (third century) was a Christian who refused to marry a Roman consul, and was eventually martyred. She is the patron saint of bell ringers. The name was revived in the 19th century, but has faded again since. Aggie is the pet form; Agata is the Italian and Spanish form; Agueda is Spanish. Writer Agatha Christie.
Agatha has 25 variant forms: Aagje, Ag, Agace, Agacia, Agafia, Agafiya, Agafon, Agapet, Agapit, Agata, Agathe, Agathi, Agatta, Agetha, Aggi, Aggie, Aggy, Aggye, Agi, Agie, Agota, Agotha, Agueda, Agy and Agye.
For more information, see also the related name Agate.