Leonard
The taxon authority Leonard may refer to:
- Arthur Byron Leonard (1902–1987), malacologist
- Emery Clarence Leonard (1892–1968, Leonard) U.S. botanist
- Jean Joseph Gustave Léonard (1920–2013, J.Léonard), Belgian botanist
- Mortimer Demarest Leonard (1890–1975), U.S. entomologist
- Steven W. Leonard (born 1943, S.W.Leonard), U.S. botanist