1973 Japan Open Tennis Championships

The 1973 Fred Perry Japan Open Tennis Championships was a combined men's and women's tennis tournament played on outdoor hard courts and took place in Tokyo, Japan. The tournament was held from 8 October through 14 October 1973. The men's events were part of the 1973 Commercial Union Assurance Grand Prix circuit and graded as B category whereas the women's competition was a non-tour event. Ken Rosewall won the men's singles title, earning him the $12,000 first prize, while Evonne Goolagong won the women's singles event and received $5,000.

Men's singles
🇦🇺 Ken Rosewall defeated 🇦🇺 John Newcombe, 6–1, 6–4

Men's doubles
🇦🇺 Mal Anderson / 🇦🇺 Ken Rosewall defeated 🇦🇺 Colin Dibley / 🇦🇺 Allan Stone, 7–5, 7–5

Women's singles
🇦🇺 Evonne Goolagong defeated Helga Niessen Masthoff, 6–3, 6–4