The following is a partial list of rivers of Montana (U.S. state).
Water in these rivers flows east and south from the Continental Divide of the Americas, also known as the Great Divide, into the Gulf of Mexico via the Missouri and Mississippi rivers.
Waters in these rivers flow north and east from the Laurentian Divide into Hudson Bay, a tributary of the Arctic Ocean, via the Saskatchewan and Nelson rivers.
Water in these rivers flow west from the Continental Divide of the Americas into the Pacific Ocean via the Columbia River.
