| Pietro Participazio | |
| Order: | 20th |
| Office: | Doge of Venice |
| Term Start: | 939 |
| Term End: | 942 |
| Predecessor: | Pietro II Candiano |
| Successor: | Pietro III Candiano |
| Birth Date: | Unknown |
| Death Date: | 942 |
Pietro Participazio (reigned 939–942) was, by tradition, the twentieth doge of the Republic of Venice.
He was son of the eighteenth Doge, Orso II Participazio.
Pietro's reign appears to have been entirely uneventful; he died three years after his election and was buried in the Felice church of Saint di Ammiana, where his father was buried before him.