John Henry de la Poer Beresford, 5th Marquess of Waterford, KP, PC, DL (21 May 1844 – 23 October 1895), styled Earl of Tyrone from 1859 to 1866, was an Irish peer and Conservative politician.

[4] He was appointed Lord Lieutenant of Waterford in 1874, which he remained until his death,[5] and was admitted to the Irish Privy Council in 1879.

[6] In 1885 he was sworn of the British Privy Council[7] and appointed Master of the Buckhounds under Lord Salisbury,[8] a post he held until the fall of the Conservative administration in early 1886.

Lord Waterford eloped with Florence Grosvenor Rowley, wife of John Vivian[10] and married her on 9 August 1872.

[13] Lord Waterford committed suicide in October 1895, aged 51, and was succeeded in the marquessate by his only son, Henry.