Rapid River is an unincorporated community in Delta County in the Upper Peninsula of Michigan. The community was first named Rapid Siding as a stop on the Minneapolis, St. Paul and Sault Ste. Marie Railroad. The name was recorded as Rapid River when the community was platted in 1887. The community never incorporated as a village. U.S. Highway 2 passes through Rapid River and joins with U.S. Highway 41 just west of town.

One scene from the 2001 film Escanaba in da Moonlight was shot in the Swallow Inn, a popular bar on Main Street.