| 1977 Japan Open Tennis Championships | |
|---|---|
| Date | 31 October – 6 November |
| Edition | 5th |
| Category | Grand Prix |
| Draw | 64S / 32D |
| Prize money | $100,000 |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Champions | |
| Singles | |
| | |
| Doubles | |
| | |
The 1977 Japan Open was a men's tennis tournament played on hard courts and part of the 1977 Colgate-Palmolive Grand Prix. Also called the Fred Perry Japan Open its sponsored name took place in Tokyo, Japan. The tournament was held from 31 October through 6 November 1977. First-seeded Manuel Orantes won the singles title.
Manuel Orantes defeated
Kim Warwick, 6–2, 6–1
Geoff Masters /
Kim Warwick defeated
Colin Dibley /
Chris Kachel, 6–2, 7–6