Tomelloso is a municipality located in the northeast of the province of Ciudad Real, within the autonomous community of Castile-La Mancha in Spain. Situated in the geographic center of the natural region of La Mancha and with a population of 36,304 it is the most populous municipality in the comarca and ranks as the eighth largest in Castilla-La Mancha. The municipal territory is predominantly flat, except in the southeast, where the land gently rises to form the Campo de Montiel plateau.