| Guido Castelli | |
| Office: | Mayor of Ascoli Piceno |
| Term Start: | 23 June 2009 |
| Term End: | 11 June 2019 |
| Predecessor: | Piero Celani |
| Successor: | Marco Fioravanti |
| Term Start2: | 13 October 2022 |
| Constituency2: | Marche |
| Birth Date: | 30 November 1965[1] |
| Birth Place: | Siena, Tuscany, Italy |
| Alma Mater: | University of Macerata |
| Profession: | lawyer |
Guido Castelli (born 30 November 1965 in Siena) is an Italian lawyer and politician.[1]
Former member of the Italian Social Movement and National Alliance, he has been a member of the centre-right party Forza Italia since 2013.[1] He was elected Mayor of Ascoli Piceno on 23 June 2009, and re-elected for a second term on 28 May 2014.[1] [2] [3]