| Singles | |
|---|---|
| 2015 Shimadzu All Japan Indoor Tennis Championships | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 3–6, 6–3 |
Martin Fischer was the defending champion but decided not to participate.
Michał Przysiężny won the title defeating John Millman in the final, 6–3, 3–6, 6–3.