Henry Erskine, 10th Earl of Buchan, Scottish politician (d. 1767)
Henry David Erskine, 10th Earl of Buchan FRS (17 April 1710 – 1 December 1767), styled Lord Auchterhouse until 1745, was a Scottish peer.

Buchan was the eldest surviving son of David Erskine, 9th Earl of Buchan, by Frances, daughter of Henry Fairfax. He was elected a Fellow of the Royal Society in 1734. A freemason, he was Grand Master of the Grand Lodge of Scotland between 1745 and 1746.Lord Buchan married Agnes, daughter of Sir James Steuart, 7th Baronet, on 31 January 1739. They had six children:

Lady Anne Agnes Erskine (b. 1739; d. 5 October 1804)

David Erskine, Lord Cardross (1741–1747)

David Stewart Erskine, 11th Earl of Buchan (b.1 June 1742; d.19 April 1829)

Henry Erskine (b. 1 November 1746; d.1817), the father of Henry Erskine, 12th Earl of Buchan

Thomas Erskine, 1st Baron Erskine (b.10 January 1750; d.1823)

Lady Isabella Erskine (d. 1824)Lord Buchan died at Walcot, Somerset, in December 1767, aged 57, and was succeeded in the earldom by his second but eldest surviving son, David. The Countess of Buchan died at Edinburgh, Scotland, in December 1778, aged 61.