Poplar River

Poplar River may refer to:


 * Canada
 * Manitoba
 * Poplar River (Manitoba)
 * Poplar River First Nation, a First Nation community astride the river in Manitoba
 * Ontario
 * Kenora District
 * Poplar River (Atikameg River), part of the Kapiskau River system
 * Poplar River (Fawn River), in the Severn River system
 * Poplar River (Manitoba) (the upper reaches of which are in Ontario)
 * Poplar River (Nipissing District), in Nipissing District, part of the French River system
 * Poplar River (Montana–Saskatchewan), a tributary of the Missouri River in Saskatchewan in Canada and Montana in the United States
 * United States
 * Poplar River (Lake Superior), Minnesota
 * Poplar River (Lost River), Minnesota
 * Poplar River (Montana–Saskatchewan), a tributary of the Missouri River in Saskatchewan in Canada and Montana in the United States