The Iyinu Kaniput River is a tributary of Dana Lake (Eeyou Istchee Baie-James), in Regional County Municipality (RCM) of Eeyou Istchee Baie-James (municipality), in the administrative region of Nord-du-Québec, in the Canadian province of Quebec, in Canada.
The hydrographic slope of the Iyinu Kaniput River is served by the Northern Highway from Matagami passing west of the source of the river to . The surface of the river is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.
The main hydrographic slopes near the Iyinu Kaniput River are:
The Iyinu Kaniput River originates from a forest stream (elevation: ) on the Northwest flank of a mountain with a peak of . The upper part of this river flows mainly in marsh area. Its source is located at:
From its source, the "Iyinu Kaniput River" flows on according to the following segments:
The "Iyinu Kaniput River" flows into a bay on the west shore of Dana Lake (Eeyou Istchee Baie-James). This lake in turn drains into Dana Lake (Eeyou Istchee Baie-James) which empties into a bay west of Evans Lake; this last stretch of water is crossed to the North by the Broadback River.
The mouth of the Iyinu Kaniput River is located at:
The toponym "Iyinu Kaniput River" was formalized on October 5, 1982 at the Commission de toponymie du Québec