| Sidney Gilchrist Thomas | |
|---|---|
| Sidney Gilchrist Thomas | |
| Born | 16 April 1850 | 
| Died | 1 February 1885 (1885-03) (aged 34) | 
| Nationality | English | 
Sidney Gilchrist Thomas (16 April 1850 – 1 February 1885) was an English inventor, best known for his role in the iron and steel industry.