Rock River may refer to:
Streams Canada Rock River (Yukon), a tributary of the Bell River; see List of rivers of Yukon
United States Rock River (Mississippi River tributary), in Wisconsin and Illinois Rock River (Big Sioux River tributary), in Minnesota and Iowa Rock River (Lake Michigan), in Michigan Rock River (Lake Superior), in Michigan Rock River (Sturgeon River tributary), in Michigan Rock River (Lake Champlain), in northern Vermont Rock River (West River tributary), in southern Vermont Little Rock River, in Minnesota and Iowa
Communities Rock River, Michigan, in Onota Township, Michigan, U.S. Rock River Township, Michigan, U.S. Rock River, Wyoming, U.S. Rock River, in Clarendon, Jamaica
Other uses Rock River Arms, an American firearms company Rock River Generating Station, Wisconsin, U.S. Rock River Hotel, Illinois, U.S. Rock River Music, music branding agency in San Francisco, California and Putney, Vermont Rock River Raptors, professional indoor football team in Rockford, Illinois, U.S. Rock River Seminary, now Mount Morris College, in Mount Morris, Illinois, U.S.
See also Rok River, in Sweden Rocky River (disambiguation)