De Decker

De Decker is a Dutch occupational surname meaning "the thatcher". A variant spelling is De Dekker. In West Flanders the name is usually agglutinated to Dedecker. People with this name include:

De Decker / De Dekker DeDecker / Dedecker
 * Alfdan De Decker (born 1996), Belgian cyclist
 * Armand De Decker (1948–2019), Belgian politician
 * Ezechiel de Decker (1603/04–1646/47), Dutch surveyor and teacher of mathematics
 * Jacob de Decker (1640–1680), Dutch painter active in Italy
 * Jeremias de Dekker (c.1610–1666), Dutch poet
 * Johannes de Decker (1626–aft.1670), Dutch landowner in New Netherland
 * Mike De Decker (born 1995), Belgian darts player
 * Pierre de Decker (1812–1891), Prime Minister of Belgium 1855–1857
 * Tijl De Decker (2001–2023), Belgian cyclist
 * Wim De Decker (born 1982), Belgian football player and manager
 * Nicholas De Decker (born 1997), South African lawyer
 * Jane DeDecker (born 1961), American sculptor
 * Jean-Marie Dedecker (born 1952), Belgian politician, founder of List Dedecker
 * Mary DeDecker (1909–2000), American botanist, plant collector
 * Paul Dedecker (1921–2007), Belgian mathematician
 * Peter Dedecker (born 1983), Belgian politician