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James Walter Douglas | |
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| Born | 4 November 1837 |
| Died | 25 June 1918 (aged 80) Manhattan, New York, United States |
| Nationality | Canadian |
| Education | University of Halle-Wittenberg University of Edinburgh Queen's University Université Laval |
| Spouse | Naomi Douglas |
| Children | 6, including James Douglas Jr. |
| Parent(s) | James Douglas (father) (1800–1886) Elizabeth Ferguson (mother) |
| Relatives | Lewis Douglas (grandson) |
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James Walter Douglas (4 November 1837 – 25 June 1918) was a British North America born mining engineer and businessman who introduced a number of metallurgical innovations in copper mining and amassed a fortune through the copper mining industry of Bisbee, Arizona Territory and Sonora before and after the turn of the 20th century.