| Mariano Tansini | |
| Fullname: | Mariano Tansini |
| Position: | Forward |
| Birth Date: | 10 August 1903 |
| Birth Place: | Codogno, Italy |
| Death Place: | Padua, Italy |
| Years1: | 1921–1922 |
| Caps1: | ? |
| Goals1: | ? |
| Clubs2: | → Cremonese (loan) |
| Years2: | 1922–1923 |
| Caps2: | ? |
| Goals2: | 0 |
| Years3: | 1923–1924 |
| Caps3: | 14 |
| Goals3: | 4 |
| Years4: | 1924–1927 |
| Caps4: | 57 |
| Goals4: | 10 |
| Years5: | 1927–1930 |
| Caps5: | 82 |
| Goals5: | 18 |
| Years6: | 1930–1932 |
| Caps6: | 54 |
| Goals6: | 12 |
| Years7: | 1932–1933 |
| Caps7: | 32 |
| Goals7: | 6 |
| Years8: | 1933–1934 |
| Caps8: | 13 |
| Goals8: | 3 |
| Clubs9: | Sampierdarenese |
| Years9: | 1934–1935 |
| Caps9: | 4 |
| Goals9: | 1 |
| Nationalyears1: | 1926 |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 1929 |
| Nationalcaps2: | 2 |
| Nationalgoals2: | 1 |
| Manageryears1: | 1934–1935 |
| Managerclubs1: | Fanfulla |
| Manageryears2: | 1937–1938 |
| Managerclubs2: | Brescia Calcio |
| Manageryears3: | 1939 |
| Managerclubs3: | Padova |
| Manageryears4: | 1943–1946 |
| Managerclubs4: | Padova |
| Manageryears5: | 1946–1947 |
| Managerclubs5: | Castelfranco Veneto |
| Manageryears6: | 1949–1950 |
| Managerclubs6: | Inter |
| Manageryears7: | 1951–1953 |
| Managerclubs7: | Piacenza |
| Manageryears8: | 1953 |
| Managerclubs8: | Padova |
Mariano Tansini (pronounced as /it/; 10 August 1903 - 15 June 1968) was an Italian association football manager and footballer who played as a forward. He played for the Italy national football team twice, the first being on 21 March 1926, the occasion of a friendly match against Ireland in a 3–0 home win.[1]