| Marzia Piazza | |
| Birth Place: | Caracas, Venezuela |
| Birth Date: | 21 May 1951 |
| Birth Name: | Marzia Rita Gisela Piazza Suprani |
| Eye Color: | Hazel |
| Hair Color: | Brown |
| Nationalcompetition: | Miss World 1969 (4th Runner-Up) |
Marzia Rita Gisela Piazza Suprani (born May, 27 1951) is a Venezuelan model and beauty pageant titleholder who won 1969 Miss Venezuela contest, representing Vargas, after María José Yéllici, of Aragua had resigned three months after her victory.[1] Piazza was the official representative of Venezuela to the Miss World 1969 pageant held in London, United Kingdom, on November 27, 1969; when she won the title of 4th Runner Up.