| James Tocher Bain | |
| Birth Date: | 26 February 1906 |
| Birth Place: | Edinburgh, Scotland |
| Death Place: | Morrisburg, Ontario, Canada |
| Occupation: | Engineer |
James Tocher Bain (26 February 1906 – 5 December 1988) was a pioneering Canadian engineer and also an inductee to Canada's Aviation Hall of Fame.