William Benjamin Robinson (December 22, 1797 – July 18, 1873) was a fur trader and political figure in Upper Canada.

He was born in Kingston in 1797, the son of Christopher Robinson and Esther Sayre, and moved to York (Toronto) with his family in 1798.

He later joined his brother Peter in the fur trade, operating mainly in the Muskoka district.

In 1843, he negotiated a treaty with the Chippewas of Lake Simcoe where 700 acres (2.8 km2) were "set aside to be held in trust" for their use.

In December in that year, he was appointed inspector-general; he resigned the following March because he opposed William Henry Draper's bill to create a University of Upper Canada.