Raymond Eccleston Serveira Williamson (September 1, 1894 - September 27, 1957) was a highly decorated officer in the United States Army with the rank of Brigadier General.
A graduate of the United States Military Academy, he is most noted for his service as Commanding General, Service Command, South Pacific Theater of Operations and as Assistant Commanding General, 91st Infantry Division during Italian campaign during World War II.Williamson remained in the Army following the War, and held several important assignment including Military Attaché to Canada or Great Britain and Commanding general, 3rd Armored Division.