| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Ascanio Marchesini | |
| Bishop of Calvi Risorta | |
| Church: | Catholic Church |
| Diocese: | Diocese of Calvi Risorta |
| Term: | 1575–1580 |
| Predecessor: | Paolo Terracino |
| Successor: | Scipione Bozzuti |
| Consecration: | 19 May 1567 |
| Consecrated By: | Egidio Valenti |
| Death Date: | 1580 |
| Death Place: | Calvi Risorta, Italy |
| Previous Post: | Titular Bishop of Maioren (1567–1575) |
Ascanio Marchesini (died 1580) was a Roman Catholic prelate who served as Bishop of Calvi Risorta (1575–1580)[1] and Titular Bishop of Maioren (1567–1575).[2]
On 18 April 1567, Ascanio Marchesini was appointed during the papacy of Pope Pius V as Titular Bishop of Maioren.[3] On 19 May 1567, he was consecrated bishop by Egidio Valenti, Bishop of Nepi e Sutri, with Thomas Goldwell, Bishop of Saint Asaph, and Giambattista Milanese, Bishop of Marsi, serving as co-consecrators. On 23 September 1575, he was appointed during the papacy of Pope Gregory XIII as Bishop of Calvi Risorta.He served as Bishop of Calvi Risorta until his death in 1580.