La Siberia is a comarca in the northeastern portion of the province of Badajoz in the autonomous community of Extremadura, Spain. Its capital is the municipality of Herrera del Duque. The comarca is bordered on the north by the provinces of Cáceres and Toledo, on the west by Las Vegas Altas comarca, on the south by La Serena comarca, and on the east by the province of Ciudad Real. The district contains 18 municipalities with a combined area of 2,943 km2 (1,136 sq mi) and a population of 29,214 people.