Colmenar de Montemayor is a municipality in the province of Salamanca, in the autonomous community of Castile and Leon, Spain. Its postal code is 37711.
It is located from the provincial capital city of Salamanca, at above sea level. The municipality covers an area of .
It was founded by the king Alfonso IX of Leon in the 13th century.
It has a population of 189 people (2015).