1977 Japan Open Tennis Championships

The 1977 Japan Open Tennis Championships was a men's tennis tournament played on hard courts and part of the 1977 Colgate-Palmolive Grand Prix and took place in Tokyo, Japan. The tournament was held from 31 October through 6 November 1977. First-seeded Manuel Orantes won the singles title.

Singles
🇪🇸 Manuel Orantes defeated 🇦🇺 Kim Warwick, 6–2, 6–1

Doubles
🇦🇺 Geoff Masters / 🇦🇺 Kim Warwick defeated 🇦🇺 Colin Dibley / 🇦🇺 Chris Kachel, 6–2, 7–6