| Men's doubles | |
|---|---|
| 2019 Liuzhou Open | |
| Champions |  Mikhail Elgin  Denis Istomin |
| Runners-up |  Nam Ji-sung Song Min-kyu |
| Final score | 3–6, 6–4, [10–6] |
Gong Maoxin and Zhang Ze were the defending champions [1] but chose not to defend their title.
Mikhail Elgin and Denis Istomin won the title after defeating Nam Ji-sung and Song Min-kyu 3–6, 6–4, [10–6] in the final.
André Göransson / 
Christopher Rungkat (quarterfinals)
Jeevan Nedunchezhiyan / 
Adil Shamasdin (first round) Nam Ji-sung / Song Min-kyu (final)
Sadio Doumbia / Fabien Reboul (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Göransson C Rungkat | 6 | 6 | ||||||||||||||||||||||||
| WC |  F Sun Wu Hao | 3 | 2 | 1 | A Göransson C Rungkat | 77 | 4 | [8] | |||||||||||||||||||
 A Davidovich Fokina E López Pérez | 3 | 2 | PR | M Elgin D Istomin | 62 | 6 | [10] | ||||||||||||||||||||
| PR | M Elgin D Istomin | 6 | 6 | PR | M Elgin D Istomin | 6 | 3 | [10] | |||||||||||||||||||
| 4 | S Doumbia F Reboul | 3 | 66 |  T Matsui V Vardhan | 4 | 6 | [7] | ||||||||||||||||||||
| T Matsui V Vardhan | 6 | 78 | T Matsui V Vardhan | 6 | 64 | [12] | |||||||||||||||||||||
 C Eubanks K Uchida | 77 | 6 | C Eubanks K Uchida | 2 | 77 | [10] | |||||||||||||||||||||
S Diez  M Safwat | 61 | 4 | PR | M Elgin D Istomin | 3 | 6 | [10] | ||||||||||||||||||||
 N Barrientos Z Li | 2 | 6 | [9] | 3 | J-s Nam M-k Song | 6 | 4 | [6] | |||||||||||||||||||
| WC | X Gao A Wang | 6 | 4 | [11] | WC | X Gao A Wang | 4 | 3 | |||||||||||||||||||
| WC | Wang Huixin Xiao Linang | 2 | 3 | 3 | J-s Nam M-k Song | 6 | 6 | ||||||||||||||||||||
| 3 | J-s Nam M-k Song | 6 | 6 | 3 | J-s Nam M-k Song | 6 | 6 | ||||||||||||||||||||
D-h Lee  G Oliveira | 4 | 2 | Y Bai Y-s Chung | 3 | 4 | ||||||||||||||||||||||
| Y Bai Y-s Chung | 6 | 6 | Y Bai Y-s Chung | 77 | 4 | [10] | |||||||||||||||||||||
 I Sabanov M Sabanov | 6 | 6 | I Sabanov M Sabanov | 65 | 6 | [8] | |||||||||||||||||||||
| 2 | J Nedunchezhiyan A Shamasdin | 4 | 3 | ||||||||||||||||||||||||
Sanchai Ratiwatana and Sonchat Ratiwatana were the defending champions and successfully defended their title, defeating Nam Ji-sung and Song Min-kyu in the final, 7–6(7–2), 3–6, [10–7].
Chen Ti and Ben McLachlan were the defending champions but chose not to defend their title.
Toshihide Matsui and Frederik Nielsen were the defending champions but only Matsui chose to defend his title, partnering Ričardas Berankis. Matsui lost in the first round to Nam Ji-sung and Song Min-kyu.
Nam Ji-sung and Song Min-kyu were the defending champions but lost in the final to Hsieh Cheng-peng and Christopher Rungkat.
Gong Maoxin and Zhang Ze were the defending champions but lost in the quarterfinals to Arjun Kadhe and Saketh Myneni.
This was the first edition of the tournament.
This was the first edition of the tournament.
Hsieh Cheng-peng and Yang Tsung-hua were the defending champions but chose not to defend their title.
Gong Maoxin and Zhang Ze were the defending champions but lost in the first round to Nam Ji-sung and Song Min-kyu.
Gonçalo Oliveira and Akira Santillan were the defending champions but chose to defend their title with different partners. Oliveira partnered Brydan Klein but withdrew in the first round. Santillan partnered Bradley Mousley but lost in the first round to Nam Ji-sung and Song Min-kyu.
Dustin Brown and Donald Young were the defending champions but chose not to defend their title.
Rajeev Ram and Joe Salisbury defeated Max Purcell and Luke Saville in the final, 6–4, 6–2 to win the men's doubles tennis title at the 2020 Australian Open. Purcell and Saville had entered the tournament through a wildcard.
Romain Arneodo and Andrei Vasilevski were the defending champions but chose not to defend their title.
Scott Clayton and Adil Shamasdin were the defending champions but only Clayton chose to defend his title, partnering Liam Broady. Clayton lost in the quarterfinals to Manuel Guinard and Arthur Rinderknech.
Martin Redlicki and Jackson Withrow were the defending champions but only Redlicki chose to defend his title, partnering Diego Hidalgo. Redlicki lost in the first round to Nam Ji-sung and Song Min-kyu.
Treat Huey and Nathaniel Lammons were the defending champions but chose not to defend their title.
Hsu Yu-hsiou and Benjamin Lock were the defending champions but only Lock chose to defend his title, partnering Grigoriy Lomakin. Lock lost in the semifinals to Andrew Paulson and David Poljak.
This was the first edition of the tournament.
Hsieh Cheng-peng and Christopher Rungkat were the defending champions but only Rungkat chose to defend his title, partnering Ruben Gonzales. Rungkat lost in the quarterfinals to Marc Polmans and Max Purcell.
Moez Echargui and Skander Mansouri were the defending champions but chose not to defend their title.