| Húnabyggð | |
| Settlement Type: | Municipality |
| Mapsize: | 250px |
| Coordinates: | 65.6667°N -38°W |
| Subdivision Type: | Country |
| Subdivision Name: | Iceland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Northwestern Region |
| Subdivision Type2: | Constituency |
| Subdivision Name2: | Northwest Constituency |
| Established Title: | Established |
| Established Date: | 1876 |
| Unit Pref: | Metric |
| Area Total Km2: | 4,000 |
| Population Total: | 1322 |
| Population As Of: | 2021 |
| Population Density Km2: | 0.33 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | 540, 541 |
| Code1 Name: | Municipal number |
| Code1 Info: | 5613 |
Húnabyggð (in Icelandic pronounced as /ˈhuːnaˌpɪɣθ/) is a municipality in the north of Iceland, which was formed with the merger of Blönduós and Húnavatnshreppur.[1] A vote was held in February 2022 where 97.8% of Blönduós inhabitants and 62.3% of Húnavatnshreppur inhabitants voted in favour of the merge.[2] The merger was finalized in the municipality elections in March 2022.
Húnabyggð is among the largest municipalities of Iceland in terms of area and reaches from Húnaflói (Húna Bay), on which Blönduós is situated, to the interior, in which Langjökull and Hofsjökull are situated. Blönduvirkjun hydropower plant is situated in the municipality.
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.[3] This effectively extended Húnabyggð's area farther northward along Húnaflói.