Todos Santos Cuchumatán is a municipality in the Guatemalan department of Huehuetenango. It is situated in the Sierra de los Cuchumatanes at an elevation of 2,500 m. The municipality covers an area of approximately 269 km2 and is formed by the town of Todos Santos Cuchumatán, 6 villages, and 69 smaller rural communities, called caserios, parajes, and cantones. The village of San Martin Cuchumatán is the second largest urbanized centre in the municipality of Todos Santos. San Martin is also the agricultural heart of the Cuchumateca valley which produces crops like potatoes, broccoli and large scale cultivation of coffee on the lower mountain slopes of the municipality.
The population of Todos Santos is predominantly indigenous, of Mayan descent, most of whom still speak the Mayan language of Mam. The town is one of few places in Guatemala where indigenous men still wear their traditional clothing, along with the women.
An annual festival is celebrated on October 31-November 2, and is centered on All Saint's Day on November 1. Festivities include traditional dances, marimba music and the famous horse races. The horse races are often the scene of mayhem and bloodshed due to the riders' penchant to drink alcohol for days leading up to the races even though the mayor banned the selling of hard alcohol in 2008.