Tekirdağ Değirmenaltı is a village in the District of Tekirdağ, Tekirdağ Province, Turkey. The history of the neighborhood dates back to the 19th century. The name of the neighborhood comes from the site of an old mill. In the neighborhood, economic activities such as agriculture, animal husbandry and fishing are carried out. The population of the neighborhood is 2,345 people as of 2020. In the neighborhood, there is a primary school, a health center, a mosque and a library. Cultural events in the neighborhood include traditional under-mill festivals, folk dance performances and conversations in the neighborhood café. The neighborhood awaits its visitors with its natural beauties, historical heritage and friendly people.