| Grýtubakkahreppur | |
| Settlement Type: | Municipality |
| Mapsize: | 250px |
| Pushpin Map: | Iceland |
| Coordinates: | 65.9489°N -18.1989°W |
| Subdivision Type: | Country |
| Subdivision Name: | Iceland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Northeastern Region |
| Subdivision Type2: | Constituency |
| Subdivision Name2: | Northeast Constituency |
| Leader Title1: | Manager |
| Leader Name1: | Þröstur Friðfinnsson |
| Unit Pref: | Metric |
| Area Total Km2: | 432 |
| Population Total: | 353 |
| Population Density Km2: | 0.82 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | 6602 |
| Code1 Name: | Municipal number |
| Code1 Info: | 610 |
Grýtubakkahreppur (pronounced as /is/, regionally also in Icelandic pronounced as /ˈkriːtʰʏ-/) is a municipality located in northern-central Iceland, in Northeastern Region.
The population is approximately 400. It has a local convenience store, a bank, a preschool and a grade school.
Located on the eastern side of Eyjafjörður, north of Akureyri, next to Dalvík and not too far from Húsavík. Its main settlement is the village Grenivík in Icelandic pronounced as /ˈkrɛːnɪˌviːk/, which is located next to Kaldbakur mountain.[1]
Local football club Magni Grenivík plays in the third tier of the Iceland football pyramid and play their home games at the Grenivíkurvöllur.