| 2017 Rakuten Japan Open Tennis Championships | |
|---|---|
| Date | 2–8 October |
| Edition | 44th |
| Category | ATP World Tour 500 |
| Draw | 32S/16D |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Champions | |
| Singles | |
 David Goffin | |
| Doubles | |
 Ben McLachlan / Yasutaka Uchiyama | |
The 2017 Rakuten Japan Open Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 44th edition of the Japan Open, and part of the 500 Series of the 2017 ATP World Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from October 2–8, 2017.