Nishnawbe Aski Nation (ᐊᓂᐦᔑᓈᐯ ᐊᔅᑭ ᐃᔥᑯᓂᑲᓇᓐ ᐅᑭᒫᐎᓐ (Anishinaabe-aski Ishkoniganan Ogimaawin), unpointed: ᐊᓂᔑᓇᐯ ᐊᔅᑭ ᐃᔥᑯᓂᐊᓇᓐ ᐅᑭᒪᐎᓐ; NAN for short) is a political organization representing 51 First Nation communities across Treaty 9 and Treaty 5 areas of Northern Ontario, Canada.

Re-organized to its present form in 1981, NAN's original objective was "to represent the social and economic aspirations of our people at all levels of government in Canada and Ontario until such time as real effective action is taken to remedy our problems.

NAN's administrative offices are located in Thunder Bay, Ontario.

[2] Founded as Grand Council of Treaty 9 in February, 1973, after a large anticipated deficit resulting from the anti-Reed Campaign and the Hart Commission of 1978, members of the Grand Council Treaty 9 re-organized in 1981 to become the Nishnawbe Aski Nation.

Grand Chief Alvin Fiddler[2] Deputy Grand Chief Anna Betty Achneepineskum Deputy Grand Chief Bobby Narcisse Deputy Grand Chief Mike Metatawabin Nishnawbe Aski Nation represents 51 First Nation communities within northern Ontario.