Delvaux is a surname. Notable people with the surname include:
Albert Delvaux (1918–1985), Congolese politician André Delvaux (1926–2002), Belgian film director Anne Delvaux (born 1970), Belgian politician Berthe di Vito-Delvaux (1915–2005), Belgian composer Henry Delvaux de Fenffe, Belgian politician Jean Delvaux (died 1595), Belgian Roman Catholic monk Laurent Delvaux (1696–1778), Flemish sculptor Paul Delvaux (1897–1994), Belgian painter
Other Delvaux (company) Belgian manufacturer of fine leather luxury goods 1848 Delvaux, main-belt asteroid