Castagnola is an Italian surname. Notable people with the name include:
Bartolomé Castagnola (1970), Argentine polo player Gabriele Castagnola, (1828 – 1883), Italian artist Giuliano Castagnola, (1572 – 1620), Italian Catholic Lou Castagnola (1936), American long-distance runner Luigi Castagnola (water polo) (1953), Italian former water polo player Luigi Castagnola (politician) (1936), Italian politician Rosa Graciela Castagnola (1931), Argentine politician better known as Graciela Fernández Meijide
See also
Castagnola (disambiguation)