Erik Bertelsen (8 August 1912 – 18 March 1993) was a Danish ichthyologist, who specialised in deep sea fish.
[1] The fish, Diaphus bertelseni Nafpaktitis, 1966 is named in his honour.
[2] He studied biology at the University of Copenhagen (1930 -) and in 1937 started work on the Dana collection at Charlottenlund Castle and also for the Danish Fisheries Investigation (DFI).
[1] He was director of DFI from 1958 to 1971, when he resigned to work at the zoological museum of the University of Copenhagen, where with fewer administrative duties he was able to concentrate on his research on deep sea fish.
[4] In 1932 he participated in a fisheries biology research trip to the Faroe Islands and Iceland.