Henry de la Poer Beresford, 6th Marquess of Waterford, KP, KStJ, DL (28 April 1875 – 1 December 1911), styled Earl of Tyrone until 1895, was an Irish peer and soldier.

When Lord Waterford reached his majority (i.e. turned 21 and came of age) on 28 April 1896 seven hundred invited guests, including the Duke of Beaufort attended the celebrations at the family seat of Curraghmore.

[2] He was appointed a deputy lieutenant of Northumberland on 21 May 1901,[3] and invested as a Knight of the Order of St Patrick on 15 March 1902.

[8] The battalion had been raised to provide soldiers for the Second Boer War, and left in late May 1902 for South Africa,[9] arriving in Cape Town the following month.

Peace had been announced while they were at sea, however, and Lord Waterford soon returned home, resigning his commission in the Imperial Yeomanry on 25 August 1902.