The Admiralty of het Noorderkwartier (Dutch - Northern Quarter), also known as the Admiralty of West Friesland, was one of the five admiralties of the Dutch Republic, made up of West Friesland and part of northern Holland.
It was set up on 6 March 1589 by a resolution of the Parliament of the Netherlands, via a decision of the Stadholder Maurits of Orange. It was established at Hoorn (and in Enkhuizen for about 3 months in 1597). The admiralty was disestablished in 1795.