克里斯蒂安松（挪威语：Kristiansund  聆听，又称Fosna，旧称Lille-Fosen）是挪威的一座城市，位于默勒-鲁姆斯达尔郡。

Kristiansund [krɪstjɑnˈsʉn]  ( listen) (historically Christianssund) is a city and municipality on the western coast of Norway in the Nordmøre district of Møre og Romsdal county. It was officially awarded township status in 1742, and it is still the major town for the region. The administrative center of the municipality is the city of Kristiansund. Other settlements in the municipality include the villages of Kvalvåg, Rensvik, and Nedre Frei.