Lauritz Kolderup Rosenvinge

Janus Lauritz Andreas Kolderup Rosenvinge (November 7, 1858 – 1939) was a Danish botanist and phycologist. He received his Ph.D. in 1888 from the University of Copenhagen. He was docent of botany at the polytechnic (Polyteknisk Læreanstalt) from 1900; and professor of botany at the University of Copenhagen from 1916, focusing on spore plants . He undertook investigations of algae in Danish waters and in the North Atlantic.

The alga genus Rosenvingea Børgesen is named in his honour.