Carlotto is an Italian surname. Notable people with this name include the following:
- Carlotto, a referent for Johann Carl Loth (baptized 1632 – 1698), German painter
- Estela de Carlotto (born 1930), Argentine human rights activist
- Florencia Carlotto (born 1988), Argentine volleyball player
- Florencia Carlotto (born 1988), Argentine volleyball player
- Laura Carlotto (1955 – 1978), Argentinian revolutionary
- Massimo Carlotto (born 1956), Italian writer and playwright
- Alessandro Carlotto (born 1984), Italian clown