| Event: | Men's singles |
| Championship: | 2023 BWF World Championships |
| Dates: | 21–27 August |
| Competitors: | 64 |
| Nations: | 40 |
| Venue: | Royal Arena |
| Location: | Copenhagen, Denmark |
| Gold: | Kunlavut Vitidsarn |
| Gold Nation: | THA |
| Silver: | Kodai Naraoka |
| Silver Nation: | JPN |
| Bronze: | Prannoy H. S. |
| Bronze Nation: | IND |
| Bronze2: | Anders Antonsen |
| Bronze2 Nation: | DEN |
| Prev: | 2022 Tokyo |
| Next: | 2025 Paris |
The men's singles tournament of the 2023 BWF World Championships took place from 21 to 27 August 2023 at the Royal Arena in Copenhagen.
The seeding list was based on the World Rankings of 1 August 2023.[1]
See also: 1 and 1. Viktor Axelsen (quarter-finals)
See also: 2 and 4. Anthony Sinisuka Ginting (withdrew)
See also: 3 and 2. 
Kunlavut Vitidsarn (champion)
See also: 4 and 3. 
Kodai Naraoka (final)
See also: 5 and 4. Jonatan Christie (first round)
See also: 6 and 2. 
Li Shifeng (third round)
See also: 7 and 1. 
Loh Kean Yew (third round)
See also: 8 and 3. Shi Yuqi (quarter-finals)
See also: 9 and 1. 
Prannoy H. S. (semi-finals)
See also: 10 and 1. Chou Tien-chen (third round)
See also: 11 and 2. Lakshya Sen (third round)
See also: 12 and 4. Anders Antonsen (semi-finals)
See also: 13 and 2. Lu Guangzu (second round)
See also: 14 and 4. Kenta Nishimoto (quarter-finals)
See also: 15 and 3. 
Lee Cheuk Yiu (third round)
See also: 16 and 3. Ng Ka Long (third round)
The drawing ceremony was held on 10 August.[2]
The table below lists out all the qualifiers of this edition by 22 July 2023.[3]
| Qualifier | Date of birth | Appearance | Best Performance(s) | Note | ||
|---|---|---|---|---|---|---|
| Edition(s) | Result | |||||
| Champion | ||||||
| Kunlavut Vitidsarn | August 21, 2023 | 3rd | 22 | S | ||
| Finalist | ||||||
| Kodai Naraoka | August 21, 2023 | 2nd | 22 | 2R | ||
| Semi-finalist | ||||||
| Anders Antonsen | August 21, 2023 | 6th | 19 | S | ||
| Prannoy H. S. | August 21, 2023 | 6th | 21, 22 | QF | ||
| Quarter-finalist | ||||||
| Shi Yuqi | August 21, 2023 | 4th | 18 | S | ||
| Wang Tzu-wei | August 21, 2023 | 5th | 22 | 3R | ||
| Viktor Axelsen | August 21, 2023 | 8th | 17, 22 | G | ||
| Kenta Nishimoto | August 21, 2023 | 5th | 18, 19, 22 | 3R | ||
| Third rounder | ||||||
| Li Shifeng | August 21, 2023 | 2nd | 21 | 2R | ||
| Chou Tien-chen | August 21, 2023 | 9th | 22 | B | ||
| Lee Cheuk Yiu | August 21, 2023 | 4th | 21, 22 | 3R | = | |
| Ng Ka Long | August 21, 2023 | 6th | 17, 18, 19, 22 | 3R | = | |
| Lakshya Sen | August 21, 2023 | 3rd | 21 | B | ||
| Kanta Tsuneyama | August 21, 2023 | 6th | 18 | QF | ||
| Lee Zii Jia | August 21, 2023 | 4th | 19, 21 | QF | ||
| Loh Kean Yew | August 21, 2023 | 4th | 21 | G | ||
| Second rounder | ||||||
 Ade Resky Dwicahyo | August 21, 2023 | 3rd | 21 | 2R | = | |
 Julien Carraggi | August 21, 2023 | 2nd | 22 | 1R | ||
 Ygor Coelho | August 21, 2023 | 6th | 18 | 3R | ||
 Brian Yang | August 21, 2023 | 2nd | 21 | 3R | Reigning Pan America champion | |
| Lu Guangzu | August 21, 2023 | 4th | 21 | 3R | ||
| Rasmus Gemke | August 21, 2023 | 4th | 21 | 3R | ||
| Uriel Canjura | First El Salvador qualifier, | |||||
 Christo Popov | August 21, 2023 | Youngest qualifier, | ||||
| Toma Junior Popov | August 21, 2023 | 2nd | 22 | 1R | ||
| Chico Aura Dwi Wardoyo | August 21, 2023 | 2nd | 22 | 1R | ||
| Ng Tze Yong | August 21, 2023 | 2nd | 22 | 2R | = | |
| Jason Teh | August 21, 2023 | 2nd | 22 | 1R | ||
 Jeon Hyeok-jin | August 21, 2023 | |||||
| Kantaphon Wangcharoen | August 21, 2023 | 4th | 19 | B | ||
 Danylo Bosniuk | August 21, 2023 | 2nd | 22 | 1R | ||
 Howard Shu | August 21, 2023 | 6th | 1R | |||
| First rounder | ||||||
 Nathan Tang | August 21, 2023 | |||||
 Luka Wraber | August 21, 2023 | 9th | 18, 21 | 2R | ||
| Zhao Junpeng | August 21, 2023 | 3rd | 22 | B | ||
| Jonathan Matias | August 21, 2023 | |||||
| B. R. Sankeerth | August 21, 2023 | |||||
 Jan Louda | August 21, 2023 | 2nd | 22 | 2R | ||
 Adham Hatem Elgamal | August 21, 2023 | 2nd | 22 | 1R | = | |
 Kalle Koljonen | August 21, 2023 | 6th | 21 | 2R | ||
| Kai Schäfer | August 21, 2023 | 5th | 22, 21 | 2R | ||
| Max Weißkirchen | August 21, 2023 | |||||
| Kevin Cordón | August 21, 2023 | 6th | 11 | QF | ||
| Srikanth Kidambi | August 21, 2023 | 8th | 21 | S | ||
| Jonatan Christie | August 21, 2023 | 4th | 19, 22 | QF | ||
 Misha Zilberman | August 21, 2023 | 12th | 10, 18, 19 | 2R | ||
 Fabio Caponio | August 21, 2023 | |||||
| Giovanni Toti | August 21, 2023 | |||||
| August 21, 2023 | ||||||
 Dmitriy Panarin | August 21, 2023 | |||||
| Julien Paul | August 21, 2023 | 5th | 22 | 2R | ||
 Job Castillo | August 21, 2023 | |||||
| Mark Caljouw | August 21, 2023 | 6th | 21 | QF | ||
| Joran Kweekel | August 21, 2023 | 2nd | 21 | 1R | = | |
| Anuoluwapo Juwon Opeyori | August 21, 2023 | 2nd | 21 | 1R | Reigning African champion, = | |
| Bernardo Atilano | August 21, 2023 | 3rd | 22 | 2R | ||
 Nhat Nguyen | August 21, 2023 | 5th | 21 | 3R | ||
 Milan Dratva | August 21, 2023 | |||||
 Pablo Abián | August 21, 2023 | 13th | 11, 13 | 3R | Oldest and most participated qualifier | |
| Luís Enrique Peñalver | August 21, 2023 | 5th | 18, 19, 21, 22 | 2R | ||
| Tobias Künzi | August 21, 2023 | |||||
| Justin Ma | August 21, 2023 | |||||
| Nguyễn Hải Đăng | August 21, 2023 | |||||
| Withdrew | ||||||
| Anthony Sinisuka Ginting | August 21, 2023 | 5th | 22 | QF | Reigning Asian Champion | |