de Alvear is a surname. Notable people with the surname include
Carlos María de Alvear (1789–1852), Argentine soldier and statesman Diego de Alvear y Ponce de León (1749–1830), Spanish military commander Helga de Alvear (1936–2025), German-Spanish art collector and dealer Marcelo Torcuato de Alvear (1868–1942), President of Argentina from 1922 to 1928 Maria de Alvear (born 1960), Spanish-German composer living in Germany Torcuato de Alvear (1822–1890), Argentine conservative politician