| Jurisdiction: | Diocese |
| Vilkaviškis | |
| Latin: | Dioecesis Vilkaviskensis |
| Local: | Vilkaviškio vyskupija |
| Country: | Lithuania |
| Metropolitan: | Kaunas |
| Province: | Kaunas |
| Rite: | Latin Rite |
| Sui Iuris Church: | Latin Church |
| Cathedral: | Vilkaviškis Cathedral |
| Population: | 339,241 |
| Population As Of: | 2014 |
| Catholics: | 331,154 |
| Catholics Percent: | 97.6 |
| Bishop: | Rimantas Norvila |
| Metro Archbishop: | Kęstutis Kėvalas |
| Map: | Lituania - Diocesi di Vilkaviškis.png |
| Website: | Website of the Diocese |
| Patron: | Anthony of Padua |
The Roman Catholic Diocese of Vilkaviškis (Latin: Vilkavisken(sis)) is a diocese located in the city of Vilkaviškis in the ecclesiastical province of Kaunas in Lithuania. It was established on 4 April 1926 from the Diocese of Łomża, Poland.