The Norwegian Communications Authority (Norwegian: Nasjonal kommnikasjonsmyndighet), prior to 2015 the Norwegian Post and Telecommunications Authority (Post- og teletilsynet) is a Norwegian government agency responsible for controlling and regulating the telecommunication and postal sector of Norway.

The agencies main responsibilities are controlling the telecom market, issuing frequency concessions and telephone numbers.

The authority has a close relationship with the Norwegian Competition Authority and the Norwegian Consumer Council.

It is located in Lillesand and is financed though fees charged to the telecom companies.

In 1997 it also received responsibility for the postal sector.