Castagnola (surname)
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