Men's Singles Seeds
2013 Japan Open
| Athlete | Country | Seed |
|---|---|---|
| Chih-Yuan Chuang | TPE | 1 |
| Liqin Wang | CHN | 2 |
| Jun Mizutani | JPN | 3 |
| Shuai Hao | CHN | 4 |
| Ning Gao | SIN | 5 |
| Adrian Crisan | ROU | 6 |
| Koki Niwa | JPN | 7 |
| Jian Zhan | SIN | 8 |
| Adrien Mattenet | FRA | 9 |
| Chien-An Chen | TPE | 10 |
| Peng Tang | HKG | 11 |
| Taku Takakiwa | JPN | 12 |
| Minseok Kim | KOR | 13 |
| Kazuhiro Chan | JPN | 14 |
| Andrej Gacina | CRO | 15 |
| Hu Li | SIN | 16 |
| Sangeun Jeong | KOR | 17 |
| Kenta Matsudaira | JPN | 18 |
| Alexey Smirnov | RUS | 19 |
| Patrick Franziska | GER | 20 |
| Sharath Kamal Achanta | IND | 21 |
| Kenji Matsudaira | JPN | 22 |
| Alexey Liventsov | RUS | 23 |
| Maharu Yoshimura | JPN | 24 |
| Kristian Karlsson | SWE | 25 |
| Dongsoo Kang | KOR | 26 |
| Feng Chen | SIN | 27 |
| Grigory Vlasov | RUS | 28 |
| Sheng-Sheng Huang | TPE | 29 |
| Zi Yang | SIN | 30 |
| Thomas Keinath | SVK | 31 |
| Petr Korbel | CZE | 32 |