马哈坎河是印尼的河流，河道全长980公里，从发源地加里曼丹岛的高地，流进望加锡海峡，是东加里曼丹省最长河流，流域面积约77,100平方公里，而东加里曼丹省首府沙马林达位于离河口48公里处。

The Mahakam River is in Indonesia. It flows 980 km from the district of Long Apari in the highlands of Borneo, to its mouth at the Makassar Strait.

The city of Samarinda, the provincial capital of East Kalimantan, lies along the river 48 km (30 mi) from the river mouth. The delta Mahakam river consist of specific micro climate which is influenced by high and low tide at sea level.