Sim
The taxon authority Sim may refer to:
- Chung Ja Sim, South Korean zoologist
- Jeong Ki Sim (fl. 1992, J.K.Sim), botanist
- Robert Sim (1791-1878, R.Sim), botanist
- Thomas Robertson Sim (1858–1938, Sim), Scottish botanist
The taxon authority Sim may refer to: