John Harris Smithwick (July 17, 1872 – December 2, 1948) was an American lawyer and politician who served four terms as a U.S. Representative from Florida from 1919 to 1927.
Smithwick was elected as a Democrat to the 66th, 67th, 68th, and 69th Congresses, serving from March 4, 1919, to March 3, 1927.[2] He was among those injured in the January 1922 Knickerbocker Theatre roof collapse.[3] Smithwick was an unsuccessful candidate for renomination in 1926, losing the primary election to Tallahassee businessman Tom Yon.[2]