| Official Name: | Gostinjac |
| Other Name: | Gostinjoc |
| Settlement Type: | Village |
| Pushpin Map: | Croatia Krk#Croatia |
| Coordinates: | 45.1216°N 14.6289°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | County |
| Subdivision Name1: | Primorje-Gorski Kotar |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Dobrinj |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.6 |
| Population As Of: | 2021 |
| Population Total: | 94 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Gostinjac (Chakavian: Gostinjoc) is a village located on the Croatian island of Krk. It is part of the municipality of Dobrinj. As of 2021, it had 94 inhabitants. There is a church in the village devoted to Saint Martin.