Jørgensen
The taxon authority Jørgensen may refer to:
- Aslak Jørgensen, Danish tardigradologist
- Eugen Honoratius Jørgensen (1862–1938 Jørg.), phycologist and bryologist
- Per Magnus Jørgensen (born 1940, P.M.Jørg.), Norwegian lichenologist
- Peter Jørgensen (1870–1937, also known as "Pedro Jorgensen"), Danish entomologist active particularly in Argentina and Paraguay
- Peter Møller Jørgensen (born 1958, P.Jørg.), Danish botanist
- R.B. Jørgensen (fl. 1985; R.B.Jørg.), botanist