| Petro Mirchuk | |
| Native Name Lang: | uk |
| Native Name: | Петро Мірчук |
| Birth Date: | 26 June 1913 |
| Birth Place: | , Austria-Hungary (now Ukraine) |
| Death Place: | Philadelphia, Pennsylvania, United States |
| Occupation: | Writer |
Petro Yuriiovych Mirchuk (June 26, 1913 – May 16, 1999) was a Ukrainian writer living in the United States and a leading member of the Organization of Ukrainian Nationalists. Mirchuk headed the OUN's propaganda apparatus in 1939.[1] He was an activist of the Bandera faction of OUN (known as OUN-B).[2] During World War II, he was imprisoned in Auschwitz, Mauthausen, and other concentration camps. He entered the United States as a displaced person after the war.[3] He authored several books about the OUN and UPA, and wrote the first biography of Stefan Bandera.[1]