'''DeCourcy''', '''DeCourcey''', '''De Courcy''', or '''De Courcey''' is a surname. People with the surname include:
;DeCourcy/De Courcy * Affreca de Courcy (late 12th-/early 13th century), noblewoman from the Kingdom of the Isles * Alfred De Courcy (1866–1931), Birmingham whistle maker * Anya De Courcy (born 1997), Trinidadian footballer * Bob DeCourcy (1927–2012), Canadian professional ice hockey goaltender * Brigie de Courcy (fl. 2000s–2010s), Irish television producer * Charles DeCourcy (1857–1924), justice of the Massachusetts Supreme Judicial Court * Frédéric de Courcy (1796–1862), French dramatist, poet and chansonnier * Henri Roussel de Courcy (1827–1887), French divisional general * Jim de Courcy (1927–2000), Australian cricketer * John de Courcy (1150–1219), Anglo-Norman knight who arrived in Ireland in 1176 * William de Courcy (disambiguation), various people
;DeCourcey/De Courcey * Jamie de Courcey (fl. 1990s–2020s), English actor * Matt DeCourcey (born 1983), Canadian Liberal politician * Roger De Courcey (born 1944), British ventriloquist and artists' agent
==See also== * Château de Courcy, ruined castle in the commune of Courcy in the south of the Calvados département of France * De Courcy Island, one of the Gulf Islands of the coast of southwestern British Columbia, Canada * Courcy (disambiguation) * DeCorsey E. Bolden (1924–2016), American politician and businessman from Maryland
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