Gaudin is a French surname. Notable people with the surname include:
André Gaudin, a French rowerAntoine Marc Gaudin (1900–1974), an American engineerChad Gaudin (born 1983), an American baseball playerChristian Gaudin (politician) (born 1950), a member of the Senate of FranceChristian Gaudin (handballer) (born 1967), a French team handball playerClark Gaudin (born 1931), an American politicianDamien Gaudin (born 1986), a French cyclistJean-Claude Gaudin (born 1939), the current mayor of the French city of MarseilleJean François Aimé Théophile Philippe Gaudin (1766-1833), a Swiss pastor, professor and botanistJean Gaudin (1879–1954), French painter, glass and mosaic artistLucien Gaudin (1886–1934), the great French fencer and Olympic medalistMartin-Michel-Charles Gaudin (1756–1841), duc de Gaete, a French Minister of FinancesMarc Antoine Auguste Gaudin (1804–1880), a French chemistry researcher and inventor of an air vacuum pumpThibaud Gaudin (c. 1229–1292), a Grand Master of the Knights Templar