The 1975 Western Championships, also known as the Cincinnati Open, was a men's tennis tournament played on outdoor hard courts at the Sunlite Swim and Tennis Club at Old Coney in Cincinnati, Ohio in the United States that was part of the 1975 Commercial Union Assurance Grand Prix. It was the 75th edition of the tournament and was held from July 29 through August 3, 1975. Seventh-seeded Tom Gorman won the singles title.[1]
Tom Gorman defeated Sherwood Stewart 7–5, 2–6, 6–4
Phil Dent / Cliff Drysdale defeated 
Marcelo Lara / Joaquín Loyo Mayo 7–6, 6–4