Philo Hall (December 31, 1865 – October 7, 1938) was a member of the United States House of Representatives from South Dakota. He was born in Wilton Township, Waseca County, Minnesota. He attended the common schools and studied law, being admitted to the bar in 1887 and starting his practice in Brookings, Dakota Territory, in what later became South Dakota. He was the prosecuting attorney for Brookings County, South Dakota from 1902 to 1906. He served in the South Dakota State Senate from 1901 to 1903, and served as South Dakota Attorney General from 1902 through 1906. He was elected as a Republican to the United States House of Representatives in 1906 and served 1907-1909. He did not win renomination for a second term, and returned to the practice of the law. He died in Brookings, South Dakota, in 1938.