The Long Plain First Nation is an Ojibway First Nation located in the Central Plains region of Manitoba, Canada. It is located to the southwest of Portage la Prairie along the Assiniboine River. It lies between the Rural Municipality of Portage la Prairie and the Rural Municipality of South Norfolk, and also borders another Indian reserve, the Dakota Plains First Nation. The 2006 census reported a population of 752 residents. The main settlement of Long Plain is located at 49°50′35″N 98°28′30″W / 49.84306°N 98.47500°W.
Long Plain First Nation owns and operates Rez Radio 101.7 FM, which services the Long Plain community.
The current chief of the Long Plain First Nation is Dennis Meeches.
Coordinates: 49°49′37″N 98°28′43″W / 49.82694°N 98.47861°W