The National Land Survey of Finland (Finnish: Maanmittauslaitos, Swedish: Lantmäteriverket) is an official body, dealing with cartography and cadastre issues in Finland.

It is subordinated the Finnish Ministry of Agriculture and Forestry.

On May 1, 2012 the National Land Survey opened its topographic datasets for free use.

The organisation consists of a central administration and four operations units, which are Production, General Administration, Centre for ICT Services, and the Finnish Geospatial Research Institute (FGI).

Furthermore, the NLS provides services concerning land, environment and buildings.