The 1973 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 Queen City Racquet Club in the Sharonville suburb of Cincinnati, Ohio in the United States that was part of the 1973 Commercial Union Assurance Grand Prix. The tournament was held from August 6 through August 12, 1973. Ilie Năstase and Evonne Goolagong won the singles titles.[1]
Ilie Năstase defeated 
Manuel Orantes 5–7, 6–3, 6–4
Evonne Goolagong defeated 
Chris Evert 6–2, 7–5
John Alexander / Phil Dent defeated Brian Gottfried / 
Raúl Ramírez 1–6, 7–6, 7–6
Ilana Kloss / Pat Pretorius defeated Evonne Goolagong / Janet Young 7–6, 3–6, 6–2