| Sergio Fontanari | |
| Birth Date: | 19 February 1930 |
| Birth Place: | Pergine Valsugana, Italy |
| Death Place: | Trento, Italy |
| Nationality: | Italian |
| Party: | PPTT |
| Office: | Member of the Senate of the Republic of Italy |
| Term Start: | 20 June 1979 |
| Term End: | 1 July 1987 |
| Constituency: | Pergine Valsugana |
Sergio Fontanari (19 February 1930 – 4 May 2022) was an Italian politician. A member of the Trentino Tyrolean People's Party, he served in the Senate of the Republic from 1979 to 1987.[1] [2] He died in Trento on 4 May 2022 at the age of 92.