Ernest Lester Smith | |
|---|---|
 | |
| Born | 7 August 1904 |
| Died | 6 November 1992 |
| Occupation | Biochemist |
Ernest Lester Smith FRS (7 August 1904, Teddington – 6 November 1992, Bradfield St George) was an English biochemist, Theosophist and vegetarian. He is known for his role in the UK's production of penicillin during World War II and for the postwar isolation of vitamin B12 from liver.