Carlos Riolfo was a Uruguayan defender known for playing at Estudiantes, Peñarol and Palermo. He died in 1978.
| Surname | Riolfo |
| Name | Carlos |
| Nationality | Uruguay |
| Birthplace | Montevideo, Uruguay |
| Birth Date | 5 November 1905 |
| Death Date | 5 December 1978 (73 years old) |
| Position | Defender |
| AKA | Carlos Riolfo Secco |
Palermo
Estudiantes
Peñarol