| Skagabyggð | |
| Settlement Type: | Municipality |
| Mapsize: | 250px |
| Pushpin Map: | Iceland |
| Coordinates: | 65.9069°N -20.2789°W |
| Subdivision Type: | Country |
| Subdivision Name: | Iceland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Northwestern Region |
| Subdivision Type2: | Constituency |
| Subdivision Name2: | Northwest Constituency |
| Unit Pref: | Metric |
| Area Total Km2: | 489 |
| Population Total: | 98 |
| Population Density Km2: | 0.20 |
| Code1 Name: | Municipal number |
| Code1 Info: | 5611 |
Skagabyggð (pronounced as /is/) is a former municipality in Iceland. It consisted of two noncontiguous areas which surrounded the municipality of Skagaströnd. In June 2021, residents rejected a proposal to merge the municipality with the neighboring municipalities of Skagaströnd, Blönduósbær and Húnavatnshreppur.[1]
In June 2024, 90% of Húnabyggð voters and 75% of Skagabyggð voters approved a merger wherein the two municipalities would combine into a larger municipality, also known as Húnabyggð. The merger took effect in August 2024.[2]