| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Alfonso de Aloysio | |
| Bishop of Squillace | |
| Church: | Catholic Church |
| Diocese: | Diocese of Squillace |
| Term: | 1688–1694 |
| Predecessor: | Paolo Filocamo (bishop) |
| Successor: | Gennaro Crespino |
| Ordination: | 3 May 1678 |
| Consecration: | 13 June 1688 |
| Consecrated By: | Fabrizio Spada |
| Birth Date: | 4 January 1644 |
| Birth Place: | Montelparo, Papal States |
| Death Date: | May 1694 |
| Death Place: | Squillace, Kingdom of Naples |
| Nationality: | Italian |
Alfonso de Aloysio (1644–1694) was a Roman Catholic prelate who served as Bishop of Squillace (1688–1694).[1]
Alfonso de Aloysio was born in Montelparo, Italy on 4 January 1644 and ordained a priest on 3 May 1678.[2] On 31 May 1688, he was appointed during the papacy of Pope Innocent XI as Bishop of Squillace.On 13 June 1688, he was consecrated bishop by Fabrizio Spada, Cardinal-Priest of San Callisto with Pier Antonio Capobianco, Bishop Emeritus of Lacedonia, and Costanzo Zani, Bishop of Imola, serving as co-consecrators. He served as Bishop of Squillace until his death in May 1694.