"Sonny" Mahon (August 1851 – June 19, 1928)[1][2] was an American politician and professional baseball executive.

[2] He became a political boss associated with the Democratic Party,[3][4] serving 14 years as a member of the Baltimore City Council.

[7] Mahon succeeded Sydney Frank as team president of the American League's (AL) Baltimore Orioles in 1902.

Baltimore's owners felt that AL president Ban Johnson was hurting the team's fortunes.

[11] With the team in financial straits, reportedly owing $12,000 ($422,585 in current dollar terms),[12][13] Mahon purchased shares in the team from players John McGraw, Joe Kelley, and Wilbert Robinson, becoming principal shareholder of the Orioles.