| Cesare Jonni | |
| Birth Date: | 21 January 1917 |
| Birth Place: | Macerata, Italy |
| Death Place: | Macerata, Italy |
| Years1: | 1951–1964 |
| League1: | Serie A |
| Role1: | Referee |
| Internationalyears1: | 1954–1964 |
| Confederation1: | FIFA listed |
| Internationalrole1: | Referee |
Cesare Jonni (21 January 1917 – 11 July 2008) was an Italian football referee.
In 1951, Jonni assigned to referee in Serie A, the top flight of football in Italy. Three years later, he was appointed as a FIFA referee.
In 1960, Jonni was appointed as a referee for the 1960 European Nations' Cup, where he officiated two matches. The first was a semi-final match between Czechoslovakia and the Soviet Union. The second match he officiated was the third place play-off between Czechoslovakia and France.[1]
Less than two months later, Jonni was appointed as a referee for the 1960 Summer Olympics, where he officiated two group stage matches.
In 1962, Jonni was appointed as a referee for the 1962 FIFA World Cup, where he officiated a group stage match between the Soviet Union and Uruguay.[2]
Jonni retired from refereeing in 1964.