Roy William Wier (February 25, 1888 – June 27, 1963) was a U.S. Representative from Minnesota.

Wier was born in Redfield, Spink County, South Dakota, February 25, 1888.

He learned the telephone and electrical trade, later going into theatrical stage-lighting work.

During World War I Wier served in the United States Army for eighteen months, with overseas service.

He died in Seattle, King County, Washington, June 27, 1963; his remains were cremated and the ashes deposited in the columbarium of Evergreen Washelli Cemetery.