Buchanan
The taxon authority Buchanan may refer to:
- Alex M. Buchanan (born 1944; A.M.Buchanan), botanist
- Audria M. Buchanan (1910-2002) - American microbiologist
- Dianne E. Buchanan (D.E.Buchanan) - New Zealand lichenologist
- John Buchanan (Buchanan) (1819-1898) - New Zealand botanist
- Lee L. Buchanan (1893–1958) - American entomologist
- Peter K. Buchanan (P.K.Buchanan) (1957- ) - New Zealand mycologist
- Robert Earle Buchanan (R.E.Buchanan) (1883-1973) - American bacteriologist
There is also
- Francis Buchanan-Hamilton (1762–1829), aka Francis Buchanan, Buch.-Ham. [botany], Hamilton [zoology, particularly ichthyology]), Scottish zoologist, and botanist