| Event: | Men's singles SU5 |
| Games: | 2020 Summer |
| Venue: | Yoyogi National Gymnasium |
| Dates: | 1–4 September 2021 |
| Competitors: | 8 |
| Nations: | 7 |
| Gold: | Cheah Liek Hou |
| Goldnpc: | MAS |
| Silver: | Dheva Anrimusthi |
| Silvernpc: | INA |
| Bronze: | Suryo Nugroho |
| Bronzenpc: | INA |
| Next: | 2024 |
The men's singles SU5 tournament at the 2020 Summer Paralympics in Tokyo took place between 1 and 4 September 2021 at Yoyogi National Gymnasium.[1]
These were the seeds for this event:[2]
The draw of the group stage revealed on 26 August 2021.[3] The group stage was played from 1 to 3 September. The top two winners of each group advanced to the knockout rounds.
| Date | Time | Player 1 | Score | Player 2 | Set 1 | Set 2 | Set 3 | |
|---|---|---|---|---|---|---|---|---|
| 1 Sep | 19:20 | Dheva Anrimusthi | 2–0 | Suryo Nugroho | 21–7 | 21–7 | ||
| 1 Sep | 19:20 | Bartłomiej Mróz  | 0–2 |  Méril Loquette | 16–21 | 17–21 | ||
| 2 Sep | 15:20 | Suryo Nugroho | 2–0 | Bartłomiej Mróz | 21–13 | 21–10 | ||
| 2 Sep | 15:20 | Dheva Anrimusthi | 2–0 | Méril Loquette | 21–10 | 21–10 | ||
| 3 Sep | 12:20 | Dheva Anrimusthi | 2–0 | Bartłomiej Mróz | 21–17 | 21–7 | ||
| 3 Sep | 12:20 | Suryo Nugroho | 2–0 | Méril Loquette | 21–14 | 21–8 |
| Date | Time | Player 1 | Score | Player 2 | Set 1 | Set 2 | Set 3 | |
|---|---|---|---|---|---|---|---|---|
| 1 Sep | 20:00 | Taiyo Imai  | 1–2 | Fang Jen-yu | 16–21 | 21–17 | 10–21 | |
| 1 Sep | 20:00 | Cheah Liek Hou | 2–0 |  Ahmed Eldakrory | 21–3 | 21–2 | ||
| 2 Sep | 16:00 | Taiyo Imai | 2–0 | 21–5 | 21–4 | |||
| 2 Sep | 16:00 | Cheah Liek Hou | 2–0 | Fang Jen-yu | 21–13 | 21–9 | ||
| 3 Sep | 13:00 | Cheah Liek Hou | 2–0 | Taiyo Imai | 21–19 | 21–12 | ||
| 3 Sep | 13:00 | Fang Jen-yu | 2–0 | Ahmed Eldakrory | 21–6 | 21–2 |
The knockout stage was played on 4 September.