| Guillermo Ceroni | |
| Office1: | Provisional President of the Chamber of Deputies of Chile |
| Term Start1: | 7 August 2008 |
| Term End1: | 14 August 2008 |
| Successor1: | Francisco Encina |
| Predecessor1: | Juan Bustos |
| Office3: | Member of the Chamber of Deputies of Chile |
| Term Start3: | 11 March 1994 |
| Term End3: | 11 March 2018 |
| Birth Date: | 30 July 1946 |
| Birth Place: | Parral, Chile |
| Party: | Party for Democracy |
| Alma Mater: | University of Chile |
Guillermo Arturo Ceroni Fuentes[1] [2] (born 30 July 1946) is a Chilean politician who served as a member of the Chamber of Deputies, representing District 40 of the Maule Region. He served as Provisional President of the Chamber of Deputies following the death of Juan Bustos.[3]