Đồng Tâm is a rural commune belonging to Mỹ Đức, Hà Nội, Việt Nam.

The commune is about 35 km (22 mi) by car to the south west from the center of the capital Hà Nội.

It borders Chương Mỹ district to the north, the communes xã Phúc Lâm and Vĩnh Xương to the east, Hòa Bình Province to the west, and commune Thượng Lâm to the south.

The municipality has two villages, Hoành and Đồng Mít, both together divided into 14 hamlets.

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