Jacques Bâby, dit Dupéron (1731 – August 1789) was a French Canadian fur trader who later became an employee of the British Indian Department.

After the fall of New France to the British in 1760, as part of the Seven Years' War, Bâby initially refused to swear allegiance to King George III.

But after he learned that his brother François was transferring his operations from France to London, Bâby swore the oath of allegiance and resumed trading.

His sons François, James (Jacques) and Jean Baptiste were elected as members of the Legislative Assembly in Upper Canada (now Ontario).

His daughter Suzanne married William Caldwell, a Loyalist soldier of the American Revolutionary War, an Indian agent, and founder of Amherstburg, Ontario.