Worldwide, Agtha (Agtha 
) is a rare predominantly female, but very infrequently masculine given name. The first name Agtha is characteristic of Brazil, where it is a very rare mostly feminine, but uncommonly masculine name, Indonesia, where it is a very rare feminine name, and Nigeria. Not in comparison with a country's population, this name is the most popular in India, Brazil, and Indonesia. Also, Agtha is the last name as well as the forename.