| Jurisdiction: | Diocese |
| Rēzekne–Aglona | |
| Latin: | Dioecesis Rezeknensis–Aglonensis |
| Local: | Diecēze Rēzeknes-Aglonas |
| Country: | Latvia |
| Metropolitan: | Riga |
| Rite: | Latin Rite |
| Sui Iuris Church: | Latin Church |
| Cathedral: | Rēzeknes Jēzus Sirds katedrāle (Cathedral of the Sacred Heart of Jesus) |
| Area Km2: | 15,679 |
| Population: | 301,053 |
| Population As Of: | 2014 |
| Catholics: | 88,720 |
| Catholics Percent: | 29.5 |
| Metro Archbishop: | Zbigņevs Stankevičs |
| Map: | Lettonia_-_Diocesi_di_Rezekne-Aglona.png |
The Roman Catholic Diocese of Rēzekne–Aglona (Latin: Dioecesis Rezeknensis–Aglonensis) is a diocese located in the cities of Rēzekne and Aglona in the ecclesiastical province of Riga in Latvia.