Declercq is a Dutch occupational surname, meaning "the clerk", common in the Belgian province of West Flanders. It is a concatenation of the even more common name De Clercq that is quite specific to East Flanders. People with this name include:Andrew DeClercq, American basketball player and coach
Benjamin Declercq, Belgian racing cyclist
Ed DeClercq, American politician
Gilbert Declercq, Belgian painter, illustrator, and comics artist
Nico F. Declercq, Belgian physicist and mechanical engineer.
Pierre Declercq (1938–1981), French New Caledonian politician, noted supporter of New Caledonian independence
René Desiderius Declercq (1877–1932), Flemish-Dutch political activist, writer, poet, and composer
Staf Declercq (1884–1942), Flemish nationalist Nazi collaborator and co-founder of the Vlaamsch Nationaal Verbond
Tim Declercq, Belgian racing cyclist