Gautreaux, also Gautreau, is a surname of French origin. Notable people with the surname include: Butch Gautreaux (1947-2020), American politician Dorothy Gautreaux, litigant in the U.S. Supreme Court case Hills v. Gautreaux Pierre Gautreau, husband of Virginie Amélie Avegno Gautreau Sid Gautreaux, catcher for the Brooklyn Dodgers baseball team Tim Gautreaux, Southeastern Louisiana University professor and American novelist Virginie Amélie Avegno Gautreau, Louisiana-born Parisien socialite known as "Madame X" from a portrait painting by John Singer Sargent See also Gautreaux Project