The Shah Jahan Mosque (Urdu: شاہ جہاں مسجد, Sindhi: مسجد شاهجهاني،, Persian: مسجد شاهجهان), also known as the Jamia Masjid of Thatta (Urdu: جامع مسجد ٹھٹہ, Sindhi: شاھجھاني مسجد ٺٽو), is a 17th-century building that serves as the central mosque for the city of Thatta, in the Pakistani province of Sindh.