Kollumerland en Nieuwkruisland (; ), officially abbreviated as Kollumerland c.a., is a former municipality in the northern Netherlands, located in the province of Friesland. In 2019 it merged with the municipalities of Dongeradeel and Ferwerderadiel to form the new municipality Noardeast-Fryslân.
Augsbuurt, Burum, Kollum, Kollumerpomp, Kollumerzwaag, Munnekezijl, Oudwoude, Triemen, Veenklooster, Warfstermolen, Westergeest and Zwagerbosch.
Kollumerland en Nieuwkruisland has a population of 12,775 (1 April 2016, source: CBS).
Dutch Topographic map of the municipality of Kollumerland en Nieuwkruisland, June 2015.
The Burum community houses the satellite ground station of the Nationale SIGINT Organisatie.