| Type: | Bishop |
| Honorific-Prefix: | His Excellency |
| Piotr Greger | |
| Bishop of Bielsko-Żywiec | |
| Church: | Roman Catholic |
| Diocese: | Bielsko–Żywiec |
| Enthroned: | 22 October 2011 |
| Successor: | Stanisław Dziwisz |
| Consecration: | 27 November 2011 |
| Coat Of Arms: | Coat of arms of Piotr Greger.svg |
| Motto: | W służbie Odkupicielowi (In servitio Redemptori) |
| Birth Date: | 24 March 1964 |
| Birth Place: | Tychy, Poland |
| Nationality: | Polish |
Piotr Greger (born 24 March 1964) is a Polish Roman Catholic bishop.
Ordained to the priesthood on 13 May 1989.[1] Greger was named auxiliary bishop of the Roman Catholic Diocese of Bielsko–Żywiec, Poland on 22 October 2011.[2]