| Men's doubles | |
|---|---|
| 2018 Kunming Open | |
| Champions |  Aliaksandr Bury  Lloyd Harris |
| Runners-up |  Gong Maoxin Zhang Ze |
| Final score | 6–3, 6–4 |
Dino Marcan and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.
Aliaksandr Bury and Lloyd Harris won the title after defeating Gong Maoxin and Zhang Ze 6–3, 6–4 in the final.
Sriram Balaji / Vishnu Vardhan (quarterfinals)
Alex Bolt / Luke Saville (quarterfinals) Matt Reid / Andrew Whittington (semifinals)
Ruben Gonzales / 
Toshihide Matsui (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | S Balaji V Vardhan | 4 | 6 | [6] | |||||||||||||||||||||||
 R Ortega Olmedo R Ramanathan | M Gong Ze Zhang | 6 | 3 | [10] | |||||||||||||||||||||||
| M Gong Ze Zhang | w/o | M Gong Ze Zhang | 79 | 5 | [10] | ||||||||||||||||||||||
| 4 | R Gonzales T Matsui | 3 | 4 | Y Bai Z Li | 67 | 7 | [7] | ||||||||||||||||||||
| WC | Wang Ruikai Wang Ruixuan | 6 | 6 | WC | Ruik Wang Ruix Wang | 3 | 63 | ||||||||||||||||||||
| Y Bai Z Li | 6 | 6 | Y Bai Z Li | 6 | 77 | ||||||||||||||||||||||
 Antoine Escoffier H Grenier | 3 | 4 | M Gong Ze Zhang | 3 | 4 | ||||||||||||||||||||||
 T Chen C-h Yi | 77 | 6 | A Bury L Harris | 6 | 6 | ||||||||||||||||||||||
 M Safwat T-h Yang | 63 | 4 | T Chen C-h Yi | 65 | 4 | ||||||||||||||||||||||
Li Yuanfeng V Šafránek | 4 | 79 | [8] | 3 | M Reid A Whittington | 77 | 6 | ||||||||||||||||||||
| 3 | M Reid A Whittington | 6 | 67 | [10] | 3 | M Reid A Whittington | 6 | 3 | [8] | ||||||||||||||||||
| A Bury L Harris | 6 | 6 | A Bury L Harris | 3 | 6 | [10] | |||||||||||||||||||||
| D Wu Y Wu | 4 | 3 | A Bury L Harris | 7 | 6 | ||||||||||||||||||||||
 E Donskoy  A Nedovyesov | 3 | 4 | 2 | A Bolt L Saville | 5 | 3 | |||||||||||||||||||||
| 2 | A Bolt L Saville | 6 | 6 | ||||||||||||||||||||||||
Defending champion Sergi Bruguera successfully defended his title, defeating Alberto Berasategui in the final, 6–3, 7–5, 2–6, 6–1 to win the men's singles tennis title at the 1994 French Open. It was the first ever all-Spanish men's singles final at the French Open.
Defending champion Rafael Nadal successfully defended his title, defeating Roger Federer in the final 6–2, 6–7(2–7), 6–3, 7–6(7–5), to win the singles title at the 2006 Monte Carlo Masters.
Hicham Arazi was the defending champion, but lost in the quarterfinals this year.
Yevgeny Kafelnikov was the defending champion and defended his title with 6–4, 6–4 against Magnus Larsson.
Anastasia Pavlyuchenkova and Lucie Šafářová were the defending champions, but Pavlyuchenkova chose not to participate this year.
Šafářová played alongside Kristina Mladenovic and successfully defended the title, defeating Andrea Hlaváčková and Liezel Huber in the final 6–3, 7–6(8–6).
Shuko Aoyama and Vera Dushevina were the defending champions, but Dushevina chose not to participate. Aoyama successfully defended the title alongside Gabriela Dabrowski, defeating Hiroko Kuwata and Kurumi Nara in the final, 6–1, 6–2.
Bob and Mike Bryan were the defending champions and successfully defended the title, defeating Vasek Pospisil and Jack Sock in the final, 6–3, 6–2.
Svetlana Kuznetsova was the defending champion and successfully defended her title, defeating Daria Gavrilova in the final, 6–2, 6–1.
Andrea Hlaváčková and Lucie Hradecká were the defending champions, but decided not to compete together. Hradecká partnered with Barbora Krejčíková, but lost in the quarterfinals to Bianca Andreescu and Carson Branstine. Hlaváčková partnered with Tímea Babos and successfully defended her title, defeating Andreescu and Branstine 6–3, 6–1 in the final.
Kiki Bertens and Johanna Larsson were the defending champions and successfully defended their title, defeating Natela Dzalamidze and Xenia Knoll in the final, 3–6, 6–3, [10–4].
Jamie Murray and Bruno Soares were defending champions, but chose not to defend their title.
Justine Henin-Hardenne was the defending champion and successfully defended her title, by defeating Svetlana Kuznetsova 7–6(7–3), 6–3 in the final.
Jiang Xinyu and Tang Qianhui were the defending champions and successfully defended their title, defeating Lu Jingjing and You Xiaodi in the final, 6–4, 6–4.
Oliver Marach and Mate Pavić were the defending champions, but chose not to defend their title.
Andrés Molteni and Horacio Zeballos were the defending champions, but chose not to participate together. Molteni played alongside Roman Jebavý, but lost in the quarterfinals to Marco Cecchinato and Dušan Lajović.
Juan Sebastián Cabal and Robert Farah were the defending champions and successfully defended their title, defeating Raven Klaasen and Michael Venus in the final, 6–1, 6–3.
Latisha Chan and Ivan Dodig were the defending champions and successfully defended their title, defeating Gabriela Dabrowski and Mate Pavić in a rematch of the 2018 final, 6–1, 7–6(7–5). becoming the first team in the Open era to win back-to-back French Open mixed doubles title.
Dominic Inglot and Franko Škugor were the defending champions, but Škugor chose to compete in Stuttgart instead. Inglot played alongside Austin Krajicek and successfully defended the title, defeating Marcus Daniell and Wesley Koolhof in the final, 6–4, 4–6, [10–4].
Bethanie Mattek-Sands and Jamie Murray were the defending champions and successfully defended their title, defeating Chan Hao-ching and Michael Venus in the final, 6–2, 6–3. This is the third straight Mixed Doubles title Murray has won at the US Open, following his championships in 2018 and 2017.
Jacco Eltingh and Paul Haarhuis were the defending champions, but Eltingh did not compete this year.