| 7–6, 6–3|
| Sanchai Ratiwatana
2012 All Japan Indoor Tennis Championships – Doubles Wikipedia
Dominik Meffert and Simon Stadler were the defending champions but decided not to participate.
Sanchai Ratiwatana and Sonchat Ratiwatana won the title, defeating Hsieh Cheng-peng and Lee Hsin-han 7–6(9–7), 6–3 in the final.