Frisian refers to three languages that comes from Friesland, a province in the Netherlands. They are spoken in the Netherlands, in Eastern Germany, and in some areas of Jutland, Denmark. It is also spoken on the Frisian Isles (Wadden Isles) and Western German (East Frisian) Isles such as Borkum.

They are West Germanic languages that are related to Dutch and are also the closest living languages to English. All of them have been spoken since Roman times.

The Frisian languages are: