Lieutenant-Colonel Frederick Rossmore Wauchope Eveleigh-de-Moleyns, 5th Baron Ventry, DSO DL (11 December 1861 – 23 September 1923), was a British Army officer and Anglo-Irish peer. Ventry was the son of The 4th Baron Ventry and Harriet Wauchope. He was given the additional surname of Eveleigh when his father changed the family name in 1874. He was educated at Harrow School and the Royal Military College, Sandhurst.