Ashaghi Mahalla Synagogue (), is a Jewish synagogue, located in the city of Oghuz in the Republic of Azerbaijan.
The Synagogue of the Lower Quarter, located on Gudrat Aghakishiev Street in the city of Oghuz, was built in 1849. After Soviet occupation, the synagogues edifice was used as a warehouse. After Azerbaijan regained its independence, the synagogue was restored by the local Jews (1992-1994). Although more than a century and a half have passed, the pillars used in the construction of the synagogue remain intact.