Aaron S. Stern (June 1853 Bloomington, IL - April 3, 1920 Cincinnati, Ohio) was the owner of the Cincinnati Red Stockings baseball team through 1889, when he sold it to John T. Brush. The club won the 1882 American Association pennant. Although personally generous, as an owner he was considered a penny-pincher, cutting salaries and costs in order to keep the team afloat.