| Type: | Bishop |
| Honorific-Prefix: | His Grace, The Most Reverend |
| Peter Joseph Mallon | |
| Archbishop of Regina | |
| Church: | Roman Catholic Church |
| See: | Regina |
| Appointed: | June 9, 1995 |
| Ended: | March 30, 2005 |
| Predecessor: | Charles Aimé Halpin |
| Successor: | Daniel Bohan |
| Ordination: | May 27, 1956 |
| Consecration: | February 2, 1990 |
| Consecrated By: | James Carney |
| Birth Date: | 5 December 1929 |
| Birth Place: | Prince Rupert, British Columbia, Canada |
| Death Place: | Pasqua Hospital, Regina, Saskatchewan, Canada |
| Buried: | Riverside Memorial Cemetery, Regina, Saskatchewan, Canada |
| Nationality: | Canadian |
| Religion: | Roman Catholic |
| Residence: | Prince Rupert Terrace Vancouver Nelson Regina |
| Alma Mater: | Seminary of Christ the King |
| Peter Joseph Mallon | |
| Dipstyle: | His Grace[1] The Most Reverend |
| Offstyle: | Your Grace Your Excellency |
| Relstyle: | Archbishop |
Peter Joseph Mallon (December 5, 1929 - February 3, 2007) was an archbishop in the Archdiocese of Regina from June 9, 1995, until his retirement on March 30, 2005. He retired in 2005, at the age of 75, due to the Roman Catholic church's mandatory retirement policy. He died in 2007.