a city in Pakistan, in the province of Sind, east of Karachi. It was the capital of the Muslim rulers of Lower Sind from the second half of the 14th to the early 16th century. It was part of the Mongol feudal empire in the 17th and 18th centuries. Architectural monuments in Tatta include the Shah Jahan Mosque (brick, 1644 to 1658 or 1659, with decorative glazed tiles) and the mausoleums of Jam Nizamuddin (1509), Mirza Jani Beg Tarkhan (1599), Diwan Shurfa Khan (1638), and Mirza Isa Khan (1640–44) in the necropolis on Makli Hill.

The new city of Tatta is located near the old city.

(also Taatta or D’agad’yma), a river in the Yakut ASSR; a left tributary of the Aldan River of the Lena River basin. The Tatta is 414 km long and drains an area of 10,200 sq km. It rises on the Lena Plateau and flows northward in a wide valley. It is fed mainly by snow. The mean flow rate is about 5 cu m per sec. The river freezes in October and opens up in May; it is frozen down to the bottom from December through April. In years of drought, it dries up in the summer.