Norður-Þingeyjarsýsla
| Norður-Þingeyjarsýsla | |
|---|---|
| County | |
 Counties of Iceland | |
| Coordinates: 66°20′N 16°10′W / 66.333°N 16.167°W | |
| Country |
 Iceland |
| Region | Northeastern Region |
| Time zone | GMT (UTC+0) |
Norður-Þingeyjarsýsla was a county in northeastern Iceland. It included Rifstangi, the northernmost point in mainland Iceland.
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