| Cesidio Guazzaroni | |
| Office: | Commissioner for Industry and Technology |
| Term Start: | 13 July 1976 |
| Term End: | 5 January 1977 |
| President: | François-Xavier Ortoli |
| Predecessor: | Altiero Spinelli |
| Successor: | Position abolished |
| Birth Date: | 5 January 1911 |
| Birth Place: | Loreto Aprutino, Italy |
| Death Place: | Rome, Italy |
| Party: | Italian Republican Party |
Cesidio Guazzaroni (5 January 1911 in Loreto Aprutino – 2 October 2004 in Rome) was an Italian diplomat who served as a European Commissioner from 1976 to 1977.
When Altiero Spinelli resigned from the Ortoli Commission in 1976, Guazzaroni was appointed to replace him as Commissioner for Industry and Technology. He held office from 1976 to 6 January 1977.
He later served as the Italian ambassador to Switzerland.
Order of Merit of the Italian Republic 1st Class / Knight Grand Cross – 2 June 1975