Tuba Shahi Mosque (Azerbaijani: Tuba-Şahi məscidi) (Persian: مسجد طوبی شاهی‎) is located in Mardakan township of Baku. It is an architectural monument of Azerbaijan and is a cultic construction, which was spread in architecture of the northern regions of Azerbaijan. The mosque was constructed in the 15th century and was named in honor of the woman who ordered its construction. The Quadrangular castle, a building of the Middle Ages, is located near the mosque.