Unión de la Selva is a Social Solidarity Society that brings together more than 1400 small indigenous producers of Mayan origin, from the Mam, Mocho, Tojolabal, Tzotzil and Tzeltal ethnic groups, settled in 146 communities in 19 municipalities of the Sierra Madre de Chiapas.

Unión de la Selva was formed in 1980 in an attempt to respond to the common problems of the farmers and in an effort to secure fair prices for their coffee and to maintain their natural resources (soil, water, flora and fauna), deteriorated by the effects of modern monoculture practices. Organic farming is based on traditional knowledge, and the effort is materialised in the preservation of biodiversity through the cultivation of indigenous crops and the use of traditional working methods.