Henry Lascelles may refer to:
- Henry Lascelles (1690-1753), English-born Barbados plantation owner
- Henry Lascelles (born 1953), 53rd in the Line of succession to the British throne
- Henry Lascelles, 2nd Earl of Harewood (1767 – 1841), known as Viscount Lascelles from 1814 to 1820, British peer and Member of Parliament
- Henry Lascelles, 3rd Earl of Harewood (1797 – 1857), known as Viscount Lascelles from 1820 to 1841, British peer and Member of Parliament
- Henry Lascelles, 4th Earl of Harewood (1824 – 1892), British peer and son of Henry Lascelles, 3rd Earl of Harewood
- Henry Lascelles, 5th Earl of Harewood (1846 – 1929), British peer and son of Henry Lascelles, 4th Earl of Harewood
- Henry Lascelles, 6th Earl of Harewood (1882 – 1947), styled The Hon. Henry Lascelles & Viscount Lascelles, son of 5th Earl of Harewood