| Type: | archbishop |
| Honorific-Prefix: | Servant of God |
| Giulio Maria Odescalchi | |
| Honorific-Suffix: | OSB |
| Bishop of Novara | |
| Church: | Roman Catholic Church |
| Diocese: | Novara |
| See: | Novara |
| Term: | 6 March 1656 - 28 August 1666 |
| Predecessor: | Benedetto Odescalchi |
| Successor: | Giuseppe Maria Maraviglia |
| Consecration: | 19 March 1656 |
| Consecrated By: | Benedetto Odescalchi |
| Rank: | Bishop |
| Birth Name: | Giulio Maria Odescalchi |
| Birth Date: | 1612 |
| Birth Place: | Como, Duchy of Milan |
| Death Date: | 28 August 1666 (aged 54) |
| Death Place: | Novara, Duchy of Milan |
| Coat Of Arms: | Vesc.Odescalchi.PNG |
Giulio Maria Odescalchi, OSB (1612 - 28 August 1666) was an Italian Benedictine who served as the Bishop of Novara. He was the brother of Pope Innocent XI. The latter opened Odescalchi's beatification process, titling him a Servant of God.
Giulio Maria Odescalchi was born in 1612 in Como to Livio Odescalchi and Paola Castelli Giovanelli. His siblings were Carlo, Lucrezia, Constantino, Nicola and Paolo. His other brother was Benedetto, the future Pope Innocent XI. He is also a relative of Carlo Odescalchi - future Servant of God. His father died in 1626 and his mother died of the plague in 1630.
Pope Alexander VII appointed him as the Bishop of Novara at the behest of Benedetto, who had resigned from that post. Odescalchi served as bishop until his death at the age of 54 in 1666.[1]