This is a list of former municipalities of Norway — municipalities that have ceased to exist at some point in time (some have later been re-established).
When the local council system was introduced in Norway in 1837-38, the country had 392 municipalities. By 1958, the number had grown to a total of 744 rural municipalities, 64 city municipalities as well as a small number of small seaports with ladested status. A committee led by Nikolai Schei, formed in 1946 to examine the situation, proposed hundreds of mergers to reduce the number of municipalities and improve the quality of local administration. Most of the mergers were carried out, albeit to significant popular protest. By 1966, most of the mergers had been carried out and there were only 470 municipalities remaining. This number continued to slowly decrease throughout the remainder of the 20th century.