De Coninck (Old Dutch spelling variant of "the king") is a surname, most common in Belgium. It can refer to:
Albert De Coninck (1915–2006), Belgian communist David de Coninck (c. 1644 – c. 1703), Flemish painter François de Coninck (1902 – after 1928), Belgian rower Frank De Coninck (1945–2022), Belgian Ambassador to the Holy See Frédéric de Coninck (1740–1811), Dutch merchant active in Copenhagen Giles de Coninck (1571–1633), Flemish Jesuit theologian Herman de Coninck (1944–1997), Flemish poet, essayist, journalist and publisher Monica De Coninck (born 1954), Flemish politician Patrice de Coninck (1770–1827), Flemish jurist Pieter de Coninck (died 1332/3), Flemish leader of the Battle of the Golden Spurs Wim De Coninck (born 1959), Belgian footballer
See also 12526 de Coninck, a main-belt asteroid Deconinck De Koninck De Koning