Samuel Chapman Massingale (August 2, 1870 - January 17, 1941) was a U.S. Representative from Oklahoma.
Born in Quitman, Mississippi, Massingale attended the public schools and the University of Mississippi at Oxford where he studied law. He moved to Fort Worth, Texas in 1887 and was employed for a short time as a section hand.
He was admitted to the bar in 1895 and commenced practice in Cordell, Oklahoma, in 1900. During the Spanish-American War, Massingale served as a private in Company D, Second Texas Infantry. He served as member of the Oklahoma Territorial Council in 1902. He ran unsuccessfully for the Sixtieth Congress in 1906. Massingale was elected as a Democrat to the Seventy-fourth and to the three succeeding Congresses and served from January 3, 1935, until his death in Washington, D.C., January 17, 1941. He was interred in Lawnview Cemetery, Cordell, Oklahoma.