The 1971 Western Championships, also known as the Cincinnati Open, was a combined men's and women's tennis tournament played on outdoor clay courts at the Cincinnati Tennis Club in Cincinnati, Ohio in the United States that was part of the 1971 Pepsi-Cola Grand Prix circuit.

The tournament was held from August 2 through August 8, 1971.

Stan Smith and Virginia Wade won the singles titles.

[3] Stan Smith defeated Juan Gisbert, Sr. 7–6, 6–3 Virginia Wade defeated Linda Tuero 6–3, 6–3 Stan Smith / Erik van Dillen defeated Sandy Mayer / Roscoe Tanner 6–4, 6–4 Helen Gourlay / Kerry Harris defeated Gail Chanfreau / Winnie Shaw 6–4, 6–4