| Petar Alberti | |
| Office: | 2nd, 5th Mayor of Split |
| Birth Date: | 24 August 1771 |
| Birth Place: | Split, Dalmatia, Republic of Venice |
| Death Place: | Split, Dalmatia, Austrian Empire |
Petar Alberti (24 August 1771 – 15 May 1822) was a Dalmatian politician that served as the Mayor of Split from 1809 to 1810 whilst Split was part of the Illyrian Provinces.