Sonck or Sønck is the surname of the following people: Grethe Sønck (1929–2010), Danish actress and singer Hannes Sonck (1919–1952), Finnish athlete Helga Sonck-Majewski (1916–2015), Finnish artist Lars Sonck (1870–1956), Finnish architect Martinus Sonck (ca. 1590–1625), first Dutch Governor of Formosa Wesley Sonck (born 1978), Belgian football player