The taxon authority Lambert may refer to:
- Aylmer Bourke Lambert (1761–1842, Lamb.), British botanist and one of the first fellows of the Linnean Society
- Christopher Lambert (C.Lambert), German mycologist.
- Frank R. Lambert (born 1958), British ornithologist
- Fred Dayton Lambert (1871–1931 F.D.Lamb.), phycologist.
- Gretchen Lambert ascidiologist
- Jacques G. Lambert (1923–2013), Belgian ichthyologist
- Jules Lambert (1848–1940), French paleontologist
- Léon Célestin Lambert (1867-1932, L.C.Lamb.), botanist
- Michael Roderick Kirkby Lambert (1941–2004), British herpetologist
- Nick Lambert, Australian entomologist
- Olivier Lambert, paleontologist
- Philip Lambert
- Shea M. Lambert, U.S. herpetologist