Nicolaysen
# Nicolaysen

Nicolaysen is a surname. Notable people with the name include:

* Nicolay Nicolaysen (1817–1911), Norwegian archaeologist
* Julius Nicolaysen (1831–1909), Norwegian professor of medicine
* Nicolay Nicolaysen Sontum (1852–1915), Norwegian engineer, businessperson and contractor
* Wilhelm Nicolaysen (1869–1944), Norwegian barrister and businessperson
