| Sport: | Diving |
| Birth Date: | 27 September 1954 |
| Birth Place: | Bolzano, Italy |
| Spouse: | Giorgio Cagnotto |
| Children: | Tania Cagnotto |
Carmen Casteiner (born 27 September 1954) is a retired Italian diver. She finished nineteenth in the 10 metre platform event of the 1976 Olympic Games.[1]
She is married to fellow diver Giorgio Cagnotto and is the mother of Tania Cagnotto, who also went on to become a prominent athlete in the same event.[1]