20th-century Danish zoologists

Danish botanist and marine biologist (1877-1933)

Danish ornithologist

Danish entomologist, jurist and tennis player

Danish oceanographer and ichthyologist (1901 - 1961)

Danish zoologist, entomologist and botanical collector (1907–2002)

Danish entomologist expatriate to Australia (1950–2001)

Danish-Russian zoologist (1897-1973)

ichthyologist (1890-1958)

Danish ichthyologist (1912–1993)

Danish entomologist (1922–1975)

Danish marine biologist (1887–1975)

Danish botanist and herpetologist (1932-2019)