Lord Lansdowne may refer to:
- George Granville, 1st Baron Lansdowne (1666–1735), English poet, playwright and politician
- Marquess of Lansdowne, a title in the Peerage of Great Britain
- William Petty, 1st Marquess of Lansdowne (1737–1805), former British prime minister
- Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne (1845–1927), the fifth Governor General of Canada, former Viceroy of India, former Secretary of State for War, and former Secretary of State for Foreign Affairs
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