The Castle of Molina de Aragón (also called alcázar or alcazaba) is a fortification in Molina de Aragón, Castile-La Mancha, Spain.

It was declared Bien de Interés Cultural in 1931.

[1] It is located on a hill commanding the surrounding valley, and is formed by an external line of walls with four gates and numerous towers, which defends the internal fortress.

It originated as a Moorish fortress (10th-11th century), built over a pre-existing Celtiberian castle.

In 1129 it was conquered from the Moors by Alfonso I of Aragon, who gave it the Lara family.