| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Giovanni Dominico Giaconi | |
| Bishop of Guardialfiera | |
| Church: | Catholic Church |
| Diocese: | Diocese of Guardialfiera |
| Term: | 1617–1624 |
| Predecessor: | Sebastiano Rinaldi |
| Successor: | Alexander Liparuli |
Giovanni Dominico Giaconi (1580–1624) was a Roman Catholic prelate who served as Bishop of Guardialfiera (1617–1624).[1]
Giovanni Dominico Giaconi was born in Lecce, Italy in 1580.[2] On 9 January 1617, he was appointed during the papacy of Pope Paul V as Bishop of Guardialfiera.On 22 January 1617, he was consecrated bishop by Felice Centini, Bishop of Macerata e Tolentino, with Giambattista Visconti, Bishop of Teramo, and Innico Siscara, Bishop of Anglona-Tursi, serving as co-consecrators. He served as Bishop of Guardialfiera until his death in 1624.