| Event: | Men's singles |
| Championship: | 2011 BWF World Championships |
| Dates: | – |
| Venue: | Wembley Arena |
| Location: | London, England |
| Gold: | Lin Dan |
| Gold Nation: | CHN |
| Silver: | Lee Chong Wei |
| Silver Nation: | MAS |
| Bronze: | Chen Jin |
| Bronze Nation: | CHN |
| Bronze2: | Peter Gade |
| Bronze2 Nation: | DEN |
| Prev: | 2010 Paris |
| Next: | 2013 Guangzhou |
The men's singles tournament of the 2011 BWF World Championships (World Badminton Championships) was held from August 8 to 14. Chen Jin was the defending champion.
Lin Dan defeated Lee Chong Wei 20–22, 21–14, 23–21 in the final.
Lin Dan (champion) Chen Long (first round) Chen Jin (semifinals) Du Pengyu (third round)
Park Sung-hwan (third round)
Boonsak Ponsana (third round)
Sho Sasaki (quarterfinals) Lee Hyun-il (third round) Kenichi Tago (first round)
Hu Yun (first round)