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 moved with his parents in 1896 to Minneapolis, Hennepin County, Minnesota, and attended the public schools and North High School. He learned the telephone and electrical trade, later going into theatrical stage-lighting work. He was elected as a member of the Democratic-Farmer-Labor Party to the 81st through the 86th Congresses (January 3, 1949 – January 3, 1961). He was unsuccessful for reelection in 1960.