| Event: | Men's doubles |
| Championship: | 2021 World Table Tennis Championships |
| Dates: | 24–29 November |
| Venue: | George R. Brown Convention Center |
| Location: | Houston, United States |
| Win Label: | Final score |
| Win Value: | 11–8, 15–13, 11–13, 12–10 |
| Gold: | Mattias Falck Kristian Karlsson |
| Gold Nation: | SWE |
| Silver: | Jang Woo-jin Lim Jong-hoon |
| Silver Nation: | KOR |
| Bronze: | Liang Jingkun Lin Gaoyuan |
| Bronze Nation: | CHN |
| Bronze2: | Yukiya Uda Shunsuke Togami |
| Bronze2 Nation: | JPN |
| Prev: | 2019 |
| Next: | 2023 |
See main article: 2021 World Table Tennis Championships.
The men's doubles competition of the 2021 World Table Tennis Championships was held from 24 to 29 November 2021.[1]
Seeding was based on the ITTF world ranking published on 16 November 2021.[2] [3] Ranking for doubles competitions is determined by combining a pair’s individual doubles ranking position to form a combined pair ranking.[4]
Liang Jingkun / Lin Gaoyuan (semifinals)
Yukiya Uda / Shunsuke Togami (semifinals)
Ádám Szudi / Nándor Ecseki (second round)
Álvaro Robles / 
Ovidiu Ionescu (third round)
Cedric Nuytinck / 
Jakub Dyjas (third round)
An Jae-hyun / Cho Dae-seong (third round) Fan Zhendong / Wang Chuqin (quarterfinals) Jang Woo-jin / Lim Jong-hoon (final)
Maksim Grebnev / Lev Katsman (second round)
Sharath Kamal / Sathiyan Gnanasekaran (second round)
Gastón Alto / Horacio Cifuentes (second round) Martin Allegro / Florent Lambiet (third round)