| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Cosimo Dossena | |
| Bishop of Tortona | |
| Church: | Catholic Church |
| Diocese: | Diocese of Tortona |
| Term: | 1612–1620 |
| Predecessor: | Maffeo Gambara |
| Successor: | Paolo Arese |
| Consecration: | 4 March 1612 |
| Consecrated By: | Giovanni Garzia Mellini |
| Birth Date: | 1547 |
| Birth Place: | Pavia, Italy |
| Death Date: | 12 March 1620 (age 73) |
| Death Place: | Tortona, Italy |
Bishop Cosimo Dossena, B. (1547 – 12 March 1620) was a Catholic prelate who served as Bishop of Tortona from 1612 to 1620.[1]
Cosimo Dossena was born in Pavia in 1547 and ordained a priest in the Clerics Regular of Saint Paul.On 27 February 1612, he was appointed during the papacy of Pope Paul V as Bishop of Tortona.On 4 March 1612, he was consecrated bishop by Giovanni Garzia Mellini, Cardinal-Priest of Santi Quattro Coronati, with Giovanni Ambrogio Caccia, Bishop Emeritus of Castro del Lazio, and Antonio Seneca, Bishop of Anagni, serving as co-consecrators. He served as Bishop of Tortona until his death on 12 March 1620.