Simpson
The taxon authority Simpson may refer to:
- Alastair Geoffrey Brinley Simpson (born 1973, A.G.B.Simpson), Canadian microbiologist, and protistologist
- Beryl Brintnall Simpson (born 1942, B.B.Simpson), botanist
- Charles Edmond Simpson (born 1940, C.E.Simpson), botanist
- Charles Torrey Simpson (1846–1932; Simpson), American botanist
- David Alan Simpson (born 1955, D.A.Simpson), botanist
- Donald Ray Simpson (born 1932, D.R.Simpson), American botanist
- George Gaylord Simpson (1902–1984), U.S. paleontologist
- George Simpson (1880–1952, G.Simpson), botanist
- Jack A. Simpson (born 1941, J.A.Simpson), Australian mycologist
- James Jenkins Simpson (1881–1936), British entomologist and marine biologist
- Michael George Simpson, M.G.Simpson, botanist
- Paul J. Simpson, Irish microbiologist
- Phillip D. Simpson, P.D.Simpson, phycologist
- Richard K. Simpson, ornithologist