| Jurisdiction: | Diocese |
| Garissa | |
| Latin: | Dioecesis Garissaënsis |
| Local: | Jimbo la Garissa |
| Country: |  Kenya |
| Metropolitan: | Mombasa |
| Province: | Mombasa |
| Rite: | Latin Rite |
| Cathedral: | Our Lady of Consolation Cathedral in Garissa |
| Area Km2: | 140,000 |
| Population: | 729,000 |
| Population As Of: | 2006 |
| Catholics: | 6,690 |
| Catholics Percent: | 0.9 |
| Metro Archbishop: | Martin Kivuva Musonde |
| Emeritus Bishops: | Joseph Alessandro, OFMCap |
The Roman Catholic Diocese of Garissa (la|Garissaën[sis]) is a diocese located in the city of Garissa. It is administered under the ecclesiastical province of Mombasa in Kenya.