| Bæjarhreppur | |
| Settlement Type: | Former municipality |
| Subdivision Type: | Country |
| Subdivision Name: |  Iceland |
| Subdivision Type1: | Constituency |
| Subdivision Name1: | Northwest Constituency |
| Subdivision Type2: | Region |
| Subdivision Name2: | Northwestern Region |
| Established Title: | Abolished |
| Established Date: | 2012 |
| Area Total Km2: | 513 |
| Population As Of: | January 2011 |
| Population Total: | 100 |
| Timezone: | GMT |
| Utc Offset: | +0 |
| Postal Code Type: | Postcode |
| Postal Code: | 500 |
Bæjarhreppur (in Icelandic pronounced as /ˈpaiːjar̥ˌr̥ɛhpʏr̥/) is a former municipality in Iceland.
According to the 2011 census, it had a population of 100 inhabitants.