Muir
The taxon authority Muir may refer to:
- Alexander I. Muir, annelidologist
- Frederick Arthur Godfrey Muir (1872–1931), English entomologist
- John Muir (botanist, 1874–1947) (1874–1947; John Muir), South African botanist
- John Muir (botanist, 1838–1914) (1838-1914; J.Muir), botanist