| Honorific-Prefix: | Most Reverend |
| Marcello Planca | |
| Bishop of Giovinazzo | |
| Church: | Catholic Church |
| Diocese: | Diocese of Giovinazzo |
| Term: | 1517–1528 |
| Predecessor: | Lorenzo Pucci |
| Successor: | Ludovico Furconio |
| Death Date: | 1528 |
Marcello Planca (died 1528) was a Roman Catholic prelate who served as Bishop of Giovinazzo (1517–1528).
On 21 August 1517, Marcello Planca was appointed by Pope Leo X as Bishop of Giovinazzo. He served as Bishop of Giovinazzo until his death in 1528.