Marshall Clinton Formby, Jr. (April 12, 1911–December 27, 1984), was a Texas attorney, newspaper publisher, radio executive, and a Democratic politician who served a term in the Texas State Senate from District 30 from 1941 to 1945. He was a defender of West Texas interests and entitled a 1962 book, These Are My People. Formby was a maternal uncle of current Republican State Senator Robert L.