The Association of Theoretical Geography - AGETEO – is a non-profit national scientific association. It was founded on the 4th of March, 1971, at the Faculdade de Filosofia, Ciências e Letras, Rio Claro, Sao Paulo state, Brazil. Its goal is to foster research, to promote and to broadcast geographic knowledge.

Its pioneers were Antonio Christofoletti, Antonio Olívio Ceron, José Alexandre Felizola Diniz, Lívia de Oliveira, Miguel Cézar Sanchez, Pérola Emília Liberato, Élide Aparecida Chizzoti, Lucia Helena de Oliveira Gerardi, José Carlos de Godoy Camargo and Sérgio dos Anjos Ferreira Pinto.

AGETEO released in August, 1971, the first issue of "Boletim de Geografia Teorética", published twice a year until December, 1995 (volume 25 - number 49/50).

The first issue of Geografia was published in 1976, in partnership with Hucitec Publishing. From 1978, AGETEO took over publishing Geografia on its own. This journal is published three times a year. In addition to scientific journals, AGETEO started publishing books in 2000. The books focus on contemporary issues in Geography. Four books have been published so far.

Membership to AGETEO is open to individuals and institutions, not only in Brazil, but throughout the world. Anyone can submit a paper for publication in Geografia, whether members or not. The only aspect considered in order to accept a paper to publish is its scientific merit.

Geografia is exchanged with 124 institutions in 28 countries.