Lascelles (pronounced Lassels) is a surname or first name. Notable people with the surname include:
Alan Lascelles (1887–1981) "Tommy" Lascelles was Private Secretary to both King George VI and Queen Elizabeth IIDaniel Lascelles (1655–1734), English landowner and politician of Stank and Northallerton, North Riding, YorkshireDaniel Lascelles (1714–1784), English landowner, merchant and British politician of Goldsborough HallDaniel Lascelles (1902–1967), British ambassador to JapanDavid Lascelles, Viscount Lascelles (born 1950)Edward Lascelles, 1st Earl of Harewood (1740–1820), British peer and politicianEdwin Lascelles, 1st Baron Harewood (1713–1795), British landowner and politician, built Harewood HouseEdwin Lascelles (1799–1865), barrister and MP for Ripon from 1846 to 1857Francis Lascelles (1612–1667), Member of English Parliament and New Model Army officer of Stank HallFrancis William Lascelles (1890–1979), Clerk of the Parliaments 1953-1959Frank Lascelles (diplomat) (1841–1920), British diplomat, ambassador to Germany and to RussiaFrank Lascelles (pageant master) (1875–1934), British pageant masterGerald Lascelles (disambiguation), multiple peopleHenry Lascelles (1690–1753), English merchant, landowner and politician of Harewood, YorkshireHenry Lascelles, 2nd Earl of Harewood (1767–1841), British peer and politicianHenry Lascelles, 3rd Earl of Harewood (1797–1857), British peer and politicianHenry Lascelles, 4th Earl of Harewood (1824–1892), British peerHenry Lascelles, 5th Earl of Harewood (1846–1929), British peerHenry Lascelles, 6th Earl of Harewood (1882–1947), British peerJamaal Lascelles (born 1993), English footballerJames Lascelles (born 1953), British musician and son of the 7th Earl of HarewoodMargaret Lascelles, Viscountess Lascelles (born 1948), the former wife of David Lascelles, Viscount LascellesThomas Lascelles (1624–1697), Member of English Parliament and New Model Army officerWilliam Lascelles (1798–1851), British politician and son of Henry Lascelles, 2nd Earl of Harewood