De Koninck (The King in old Dutch spelling) is a surname. Notable people with the surname include:
Charles De Koninck (1906–1965), Belgian-Canadian Thomist philosopher and theologian David de Koninck alternative spelling of David de Coninck (c.1644 – 1701), Flemish painter Jean-Marie De Koninck (born 1948), Quebec mathematician Laurent-Guillaume de Koninck (1809–1887), Belgian palaeontologist and chemist Lodewijk de Koninck (1838–1924), Flemish writer Louis Herman De Koninck (1896–1984), Belgian architect and designer Luk De Koninck (born 1952), Belgian television actor Servaes de Koninck (c.1654 – c.1701), Flemish composer active in Amsterdam Thomas De Koninck (1934–2026), Canadian philosopher
Koninck: Jacob Koninck (I) (c.1615 – c.1695), Dutch landscape painter (brother of Philips) Jacob Koninck (II) (c.1647 – c.1724), Dutch painter for the Danish court (son of Jacob I) Philips Koninck (1619–1688), Dutch landscape painter (brother of Jacob I) Salomon Koninck, Dutch painter of genre scenes and portraits and engraver
See also De Koninck Brewery, a Belgian brewery De Coninck De Koning