| Ermanno Vallazza | |
| Birth Date: | 6 May 1899 |
| Birth Place: | Boca, Italy |
| Death Place: | Boca, Italy |
| Discipline: | Road |
| Role: | Rider |
| Proyears1: | 1924 |
| Proteam1: | Wolsit-Pirelli |
| Proyears2: | 1924–1927 |
| Proteam2: | Legnano |
| Proyears3: | 1928–1929 |
| Proteam3: | Bianchi |
Ermanno Vallazza (6 May 1899, in Boca – 30 January 1978, in Boca) was an Italian cyclist.[1]