Mecitözü is a district of Çorum Province in the Black Sea region of Turkey, 37 km from the city of Çorum. It covers an area of 942 km², and the elevation is 750 m. According to 2000 census the population is 26,064 of which 5,787 live in the town of Mecitözü, with the majority living in the surrounding countryside. The mayor is Ünal Yavuz (CHP).
Mecitözü stands in a small plain surrounded by mountains. Average annual rainfall is 422.7 mm. People get along on farming, especially on growing sugar beet and grains. There is also a flour mill and a brickworks. The town of Mecitözü provides the surrounding district with schools, sports facilities, a hospital and other basic infrastructure. There are three more health centres in the countryside.
Excavations in the village of Kuşsaray and the small town of Elvançelebi indicate habitation since 5000 BC.