Vansittart is a surname. Notable people with the surname include:
Cyril Vansittart (1852–1887), English-Italian chess playerEdward Vansittart Neale (1810–1892), English barristerHenry Vansittart (1732–1770), English diplomat and Governor of BengalNicholas Vansittart, 1st Baron Bexley (1766–1851), English politicianPeter Vansittart (1920–2008), English writerRobert Vansittart, 1st Baron Vansittart (1881–1957), English diplomatRobert Vansittart (jurist) (1728–1789), English juristRupert Vansittart (born 1958), English actorSir Vansittart Bowater, 1st Baronet (1862–1938), English politicianWilliam Vansittart Bowater (1838–1907), English businessman