Vail Montgomery Delony (January 5 1901 – November 18 1967) was a Democratic member of the Louisiana House of Representatives from Lake Providence in East Carroll Parish Louisiana having served from 1940 until his death in office. He was also Speaker of the chamber from 1964 until his death.Delony was born in Lake Providence where he resided all of his life to Tobias Stephens Delony and the former Helen Montgomery.