Floyd Harrell Crain was an American politician in the state of Tennessee. Crain served in the Tennessee House of Representatives from 1979 to 1989. A Democrat, he also served a stint as the Majority Floor Leader in the House. He represented the state's 82nd legislative district. Born in Lauderdale County, Tennessee, Crain was a pharmacist and member of the Methodist church. He was a graduate of Ripley High School and the University of Tennessee. He lived in Ripley, Tennessee.