North Frisia may refer to
- the historical region of North Frisia
- the district of Nordfriesland (German: Landkreis Nord-Friesland)
- the Northern part of the Dutch Provincie of Friesland (Fryslân)
The term North Frisian may also refer to:
- Something of, from, or related to North Frisia
- North Frisian language
- North Frisians, the inhabitants of the region of North Frisia
- North Frisian Islands
- North Frisian Barrier Island