| Event: | Men's singles |
| Championship: | 2019 BWF World Championships |
| Dates: | 19–25 August |
| Venue: | St. Jakobshalle |
| Location: | Basel, Switzerland |
| Gold: | Kento Momota |
| Gold Nation: | JPN |
| Silver: | Anders Antonsen |
| Silver Nation: | DEN |
| Bronze: | B. Sai Praneeth |
| Bronze Nation: | IND |
| Bronze2: | Kantaphon Wangcharoen |
| Bronze2 Nation: | THA |
| Prev: | 2018 Nanjing |
| Next: | 2021 Huelva |
The men's singles tournament of the 2019 BWF World Championships (World Badminton Championships) took place from 19 to 25 August.
The seeding list is based on the World Rankings from 30 July 2019.[1]
See also: 1 and 1. 
Kento Momota (champion)
See also: 2 and 4. Chou Tien-chen (quarterfinals)
See also: 3 and 3. 
Chen Long (quarterfinals)
See also: 4 and 2. Jonatan Christie (quarterfinals)
See also: 5 and 3. Anders Antonsen (final)
See also: 6 and 2. Anthony Sinisuka Ginting (third round)
See also: 7 and 4. 
Srikanth Kidambi (third round)
See also: 8 and 1. Kenta Nishimoto (third round)
See also: 9 and 3. 
Ng Ka Long (third round)
See also: 10 and 4. Sameer Verma (first round)
See also: 11 and 1. Lin Dan (second round)
See also: 12 and 4. 
Kantaphon Wangcharoen (semifinals)
See also: 13 and 3. Kanta Tsuneyama (third round)
See also: 14 and 1. Lee Zii Jia (quarterfinals)
See also: 15 and 2. Tommy Sugiarto (second round)
See also: 16 and 2. B. Sai Praneeth (semifinals)