Lancey is a surname. Notable people with the surname include:

• De Lancey Nicoll (1854–1931), New York County District Attorney
• James De Lancey (loyalist) (1746–1804), political figure in Nova Scotia
• Oliver DeLancey (disambiguation) (also known as Oliver DeLancey and Oliver de Lancey) may refer to:
  • Oliver De Lancey (American loyalist) (1718–1785), merchant, a New York Loyalist politician and Major-general during the American War of Independence
  • Oliver De Lancey (British Army general) (1749–1822), British Army officer who took served in the American War of Independence and the French Revolutionary Wars
  • Oliver De Lancey (British Army and Spanish Legion officer) (1803–1837), British Army officer who volunteered for the Spanish Legion and died fighting in Spain during the First Carlist War
• Stephen De Lancey (1738–1809), lawyer and political figure in New York state and Nova Scotia
• William Howe De Lancey, (1778–1815), British Army officer of the Napoleonic Era, died of wounds received at the Battle of Waterloo

• La Combe-de-Lancey
• Lance
• De Lancie (disambiguation)
• Delancey (disambiguation)

Media related to Lancey at Wikimedia Commons