磅湛省
Koh Sotin District () is a district ("srok") located in Kampong Cham Province, Cambodia. The district capital is Chi Haer town located around 10 kilometres south of the provincial capital of Kampong Cham by water, but some 42 kilometres by road. The district borders on the southern bank of the Mekong River and includes the islands of Koh Sothin and Koh Mitt in its area.