| Cosme Prenafeta | |
| Nationality: | Spanish |
| Birth Date: | 9 December 1971 |
| Birth Place: | Barcelona, Spain |
Cosme Prenafeta García (born December 9, 1971, in Barcelona, Catalonia, Spain) is a Spanish volleyball player who represented his native country at the 2000 Summer Olympics in Sydney, Australia. There he finished ninth place with the Men's National Team.