| Men's doubles | |
|---|---|
| 2019 Jinan International Open | |
| Champions |  Matthew Ebden  Divij Sharan |
| Runners-up |  Nam Ji-sung Song Min-kyu |
| Score | 7–6(7–4), 5–7, [10–3] |
Hsieh Cheng-peng and Yang Tsung-hua were the defending champions [1] but chose not to defend their title.
Matthew Ebden and Divij Sharan won the title after defeating Nam Ji-sung and Song Min-kyu 7–6(7–4), 5–7, [10–3] in the final.
Matthew Ebden / Divij Sharan (champions) Max Purcell / Luke Saville (quarterfinals)
Gong Maoxin / Zhang Ze (first round) Saketh Myneni / Jeevan Nedunchezhiyan (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Ebden D Sharan | 6 | 66 | [11] | |||||||||||||||||||||||
 S Diez  E López Pérez | 2 | 78 | [9] | 1 | M Ebden D Sharan | 6 | 6 | ||||||||||||||||||||
 P Krstin A Santillan | 7 | 4 | [10] | P Krstin A Santillan | 1 | 4 | |||||||||||||||||||||
 JP Fruttero  T-h Yang | 5 | 6 | [5] | 1 | M Ebden D Sharan | 6 | 6 | ||||||||||||||||||||
| 4 | S Myneni J Nedunchezhiyan | 6 | 6 | 4 | S Myneni J Nedunchezhiyan | 4 | 2 | ||||||||||||||||||||
 Shintaro Imai T Matsui | 4 | 3 | 4 | S Myneni J Nedunchezhiyan | 7 | 6 | |||||||||||||||||||||
| S Balaji V Vardhan | 6 | 62 | [7] | H Moriya  G Oliveira | 5 | 2 | |||||||||||||||||||||
| H Moriya G Oliveira | 3 | 77 | [10] | 1 | M Ebden D Sharan | 77 | 5 | [10] | |||||||||||||||||||
| WC | Jin Yuquan Li Zekai | 2 | 2 | J-s Nam M-k Song | 64 | 7 | [3] | ||||||||||||||||||||
Y Bai  T Gabashvili | 6 | 6 | Y Bai T Gabashvili | 1 | 3 | ||||||||||||||||||||||
| WC | X Gao R Hua | 77 | 1 | [10] | WC | X Gao R Hua | 6 | 6 | |||||||||||||||||||
| 3 | M Gong Ze Zhang | 65 | 6 | [5] | WC | X Gao R Hua | 2 | 2 | |||||||||||||||||||
| J-s Nam M-k Song | 5 | 6 | [10] | J-s Nam M-k Song | 6 | 6 | |||||||||||||||||||||
 Sa Ratiwatana So Ratiwatana | 7 | 2 | [8] | J-s Nam M-k Song | 6 | 6 | |||||||||||||||||||||
| WC | F Sun D Wu | 66 | 2 | 2 | M Purcell L Saville | 4 | 2 | ||||||||||||||||||||
| 2 | M Purcell L Saville | 78 | 6 | ||||||||||||||||||||||||
Rameez Junaid and Alexander Peya were the defending champions, but decided not to participate.
Im Kyu-tae and Danai Udomchoke won this tournament, defeating Jamie Baker and Vasek Pospisil 6–4, 6–4 in the final.
Matthew Ebden and Samuel Groth were the defending champions but Ebden decided not to participate.
Groth partners up with Adam Feeney, but lost in the first round to John Peers and John-Patrick Smith.
Peers and Smith then went on to win the title, defeating John Paul Fruttero and Raven Klaasen in the final, 7–6(7–5), 6–4.
Olivier Charroin and Martin Fischer were the defending champions, but decided not to participate.
Sanchai Ratiwatana and Sonchat Ratiwatana won the final 7–6(7–5), 6–7(3–7), [10–8] against Purav Raja and Divij Sharan
Purav Raja and Divij Sharan were the defending champions and successfully defended their title, defeating Sanchai Ratiwatana and Michael Venus in the final, 5–7, 7–6(7–3), [10–4].
Marin Draganja and Mate Pavić were the defending champion, but lost in the semifinals to Andre Begemann and Matthew Ebden.
Purav Raja and Divij Sharan were the defending champions but chose not to compete.
Ken Skupski and Neal Skupski were the defending champions, but decided not to defend their title. Third seeds Saketh Myneni and Divij Sharan won the title defeating Malek Jaziri and Denys Molchanov 7–6(7–5), 4–6, 0–0 retired in the final.
Ken Skupski and Neal Skupski were the defending champions but failed to defend their title, losing in the finals to Purav Raja and Divij Sharan 6–4, 7–6(7–3).
Purav Raja and Divij Sharan were the defending champions, but lost in the semifinals to Juan Sebastián Cabal and Treat Huey.
Andre Begemann and Jan-Lennard Struff were the defending champions but chose not to defend their title.
Scott Lipsky and Divij Sharan were the defending champions, but Lipsky chose not to participate. Sharan played alongside Artem Sitak, but lost in the semifinals to Nicolas Mahut and Édouard Roger-Vasselin.
Robin Haase and Matwé Middelkoop were the defending champions, but chose to compete in Doha instead.
Łukasz Kubot and Marcelo Melo were the two-time defending champions, but lost in the final to Raven Klaasen and Michael Venus, 6–4, 3–6, [4–10].
Ben McLachlan and Jan-Lennard Struff were the defending champions, but chose not to participate together. McLachlan teamed up with Luke Bambridge, but lost in the first round to Divij Sharan and Artem Sitak. Struff played alongside Lucas Pouille, but lost in the semifinals to Nikola Mektić and Franko Škugor.
Rohan Bopanna and Divij Sharan were the defending champions, but chose not to participate together. Bopanna played alongside Arjun Kadhe but lost in the first round to Antoine Hoang and Benoît Paire. Sharan teamed up with Artem Sitak but lost in the first round to Matthew Ebden and Leander Paes.
Marcus Daniell and Philipp Oswald were the defending champions, but chose to compete in Marbella instead.
Romain Arneodo and Hugo Nys were the reigning champions from when the tournament was last held in 2019, but chose to play in Gstaad instead.
Dominic Inglot and Austin Krajicek were the reigning champions from when the tournament was last held in 2019, but chose not to participate this year.
Rajeev Ram and Joe Salisbury defeated the defending champion Bruno Soares and his partner Jamie Murray in the final, 3–6, 6–2, 6–2 to win the men's doubles tennis title at the 2021 US Open. It was the second major title for Ram and Salisbury as a team, following the 2020 Australian Open. Ram and Salisbury saved four match points en route to the title, in the quarterfinals against Matthew Ebden and Max Purcell.
Matthew Ebden and Divij Sharan were the defending champions but chose not to defend their title.