Aaron Sweet (February 12, 1854 – January 8, 1937) was an Ontario merchant and political figure.

He represented Dundas in the Legislative Assembly of Ontario as a Conservative member from 1923 to 1926.

Sweet moved to Winchester as a young man to live with his uncle, who had opened a general store there in 1868.

The store continued to run until it burned down in the early 1980s, having been managed by a number of different people.

Sweet was also a director of the Beach Foundry Company, and served as treasurer for the Winchester Public Library from 1905 to 1909.