Hiram Casey Young (December 14, 1828 – August 17, 1899) was an American lawyer and politician and a member of the United States House of Representatives for the 10th congressional district of Tennessee.
Young was born in Tuscaloosa, Alabama in Tuscaloosa County. He moved with his parents to a farm near Byhalia, Mississippi in Marshall County in 1838. He attended the local schools, was tutored by his father, and also attended Marshall Institute in Mashall County, Mississippi. He studied law, was admitted to the bar in 1859, and commenced practice in Memphis, Tennessee. He served in the Civil War from 1861 to 1865 as lieutenant colonel of the Cavalry and on the brigade staff. In 1864, he was Assistant Inspector General for the First Division of the Cavalry.
He was elected as a Democrat to the Forty-fourth, Forty-fifth, and Forty-sixth Congresses. He served from March 4, 1875 to March 3, 1881, but was an unsuccessful candidate for re-election in 1880. However he was elected to the Forty-eighth, serving in that period from March 4, 1883 to March 3, 1885. During this Forty-eighth Congress, he was the chairman of the United States House Committee on Expenditures in the Department of the Interior.
He was not a candidate for renomination, but resumed the practice of law, and died in Memphis, Tennessee in 1899, aged 70. He was interred in Elmwood Cemetery.