John D. McWilliams

John Dacher Mcwilliams (July 23, 1891 – March 30, 1975) was a U.S. Representative from Connecticut.

Born in Norwich, Connecticut, McWilliams attended the public schools and Norwich Free Academy. He was graduated from Mercersburg (Pennsylvania) Academy in 1910. Associated with the building industry in Norwich, Connecticut. During the First World War served as a private in the Twentieth Engineers, United States Army, with overseas service, from March 26, 1918, until discharged on July 1, 1919. He resumed the building business. Selectman of the town of Norwich, Connecticut from 1935 to 1942.

McWilliams was elected as a Republican to the Seventy-eighth Congress (January 3, 1943 – January 3, 1945). He was an unsuccessful candidate for reelection in 1944 to the Seventy-ninth Congress. He was employed at the electric boat division of General Dynamics Corporation, Groton, Connecticut from 1950 to 1960. He was employed by the city of Norwich, where he resided until his death there, March 30, 1975. He was interred in Maplewood Cemetery, Norwich, Connecticut.