Thomas Cavalier-Smith
| Thomas Cavalier-Smith | |
|---|---|
| Born | 21 October 1942 London, United Kingdom | 
| Died | 19 March 2021 (aged 78) | 
| Nationality | British | 
| Alma mater | Gonville and Caius College Cambridge, King's College London | 
| Known for | Cavalier-Smith's system of classification of all organisms | 
| Awards | Fellow of the Royal Society (1998) International Prize for Biology (2004) The Linnean Medal (2007) Frink Medal (2007) | 
| Scientific career | |
| Fields | Zoology | 
| Institutions | King's College London, University of British Columbia, University of Oxford | 
| Thesis | Organelle Development in Chlamydomonas reinhardii (1967) | 
| Website | www | 
Thomas (Tom) Cavalier-Smith, FRS, FRSC, NERC Professorial Fellow (21 October 1942 – 19 March 2021), was a professor of evolutionary biology in the Department of Zoology, at the University of Oxford.
His research has led to discovery of a number of unicellular organisms (protists) and advocated for a variety of major taxonomic groups, such as the Chromista, Chromalveolata, Opisthokonta, Rhizaria, and Excavata. He was known for his systems of classification of all organisms.