| Jurisdiction: | Diocese |
| Tarnów | |
| Latin: | Dioecesis Tarnoviensis |
| Local: | Diecezja Tarnowska |
| Country: | Poland |
| Metropolitan: | Kraków[1] |
| Rite: | Latin Rite |
| Area Km2: | 7566 |
| Founded: | 1783[2] |
| Population: | 1,111,907 |
| Population As Of: | 2022 |
| Catholics: | 1,105,345 |
| Catholics Percent: | 99.4 |
| Bishop: | Andrzej Jeż[3] |
| Metro Archbishop: | Marek Jędraszewski |
| Auxiliary Bishops: | Stanisław Salaterski Leszek Leszkiewicz Artur Ważny |
| Denomination: | Catholic Church |
The Diocese of Tarnów (Latin: Dioecesis Tarnoviensis) is a Latin diocese of the Catholic Church in Poland. According to Church statistics, it is the most religious diocese in Poland, with 72.5% weekly Mass attendance.[4]