Portage River may refer to:
Canada Portage River (Alberta), a tributary of the Peace River Portage River (Beauce-Sartigan), a river in Quebec Portage River (Bécancour River tributary), a river in Quebec Portage River (Boucher River tributary), a river in Quebec Portage River (La Sarre River tributary), a river in Quebec Portage River (New Brunswick), a tributary of the Northwest Miramichi River Portage River (Percé), a river in Quebec Portage River (Petit-Saguenay River tributary), a tributary of the Northwest Miramichi River Portage River, a river of Prince Edward Island
United States Michigan Portage River (Houghton County, Michigan), the southern end of the Keweenaw Waterway Portage River (Jackson County, Michigan), a tributary of the Grand River Portage River (Kalamazoo/St. Joseph Counties), a tributary of the St. Joseph River Portage River (Livingston/Washtenaw counties), a tributary of the Huron River
Minnesota
Portage River (Fish Hook River tributary), Minnesota
Portage River (Moose Horn River tributary), Minnesota Portage River (Nina Moose River tributary), Minnesota
Ohio Portage River (Ohio), empties into Lake Erie near Port Clinton, Ohio
Historical uses The South Branch of the Chicago River, once called the Portage River