| Men's doubles | |
|---|---|
| 1981 Japan Open Tennis Championships | |
| Champions |  Balázs Taróczy  Heinz Günthardt |
| Runners-up |  Larry Stefanki Robert Van't Hof |
| Score | 3–6, 6–2, 6–1 |
| Draw | 32 |
| Seeds | 8 |
Ross Case and Jaime Fillol were the defending champions, but none competed this year.
Balázs Taróczy and Heinz Günthardt won the title by defeating Larry Stefanki and Robert Van't Hof 3–6, 6–2, 6–1 in the final. [1]
Heinz Günthardt / Balázs Taróczy (champions) Terry Moor / Eliot Teltscher (quarterfinals) Mel Purcell / Peter Rennert (semifinals) Pat DuPré / 
Buster Mottram (quarterfinals) Lloyd Bourne / Van Winitsky (semifinals) Larry Stefanki / Robert Van't Hof (final) Martin Davis / Chris Dunk (quarterfinals) Tim Gullikson / Scott McCain (second round)| Semifinals | Final | ||||||||||||
| 1 | Heinz Günthardt Balázs Taróczy | 7 | 6 | ||||||||||
| 5 | Lloyd Bourne Van Winitsky | 5 | 4 | ||||||||||
| 1 | Heinz Günthardt Balázs Taróczy | 3 | 6 | 6 | |||||||||
| 6 | Larry Stefanki Robert Van't Hof | 6 | 2 | 1 | |||||||||
| 3 | Mel Purcell Peter Rennert | 6 | 4 | 4 | |||||||||
| 6 | Larry Stefanki Robert Van't Hof | 3 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | H Günthardt B Taróczy | 6 | 6 | ||||||||||||||||||||||||
 Yoshiya Hamano Koichi Sayama | 2 | 2 | 1 | H Günthardt B Taróczy | 5 | 6 | 6 | ||||||||||||||||||||
D Gitlin  B Sison | 6 | 6 | D Gitlin B Sison | 7 | 3 | 2 | |||||||||||||||||||||
| T Fukui T Yonezawa | 1 | 1 | 1 | H Günthardt B Taróczy | 6 | 6 | |||||||||||||||||||||
| Kiyoshi Miyanami Masayuki Uchida | 6 | 6 | 7 | M Davis C Dunk | 4 | 4 | |||||||||||||||||||||
| Yukihiko Murata S Nishio | 3 | 2 | K Miyanami M Uchida | 1 | 1 | ||||||||||||||||||||||
| H Shirato Kenzo Ukon | 0 | 5 | 7 | M Davis C Dunk | 6 | 6 | |||||||||||||||||||||
| 7 | M Davis C Dunk | 6 | 7 | 1 | H Günthardt B Taróczy | 7 | 6 | ||||||||||||||||||||
| 4 | P DuPré B Mottram | 6 | 6 | 5 | L Bourne V Winitsky | 5 | 4 | ||||||||||||||||||||
| Hiroyuki Bamba Ichiro Nakanishi | 0 | 1 | 4 | P DuPré B Mottram | 6 | 2 | 6 | ||||||||||||||||||||
| K Hirai S Sakamoto | 6 | 6 | K Hirai S Sakamoto | 3 | 6 | 4 | |||||||||||||||||||||
| Akira Kawaguchi Noriyuki Washida | 1 | 4 | 4 | P DuPré B Mottram | 3 | 2 | |||||||||||||||||||||
| S Nishio Nobuya Tamura | 6 | 6 | 5 | L Bourne V Winitsky | 6 | 6 | |||||||||||||||||||||
| T Kuramitsu Etsuo Uchiyama | 3 | 3 | S Nishio N Tamura | 3 | 6 | ||||||||||||||||||||||
| S Kato S Shiraishi | 3 | 2 | 5 | L Bourne V Winitsky | 6 | 7 | |||||||||||||||||||||
| 5 | L Bourne V Winitsky | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | T Gullikson S McCain | 6 | 6 | ||||||||||||||||||||||||
| Masaru Suishu Minoru Ueda | 2 | 4 | 8 | T Gullikson S McCain | 6 | 4 | 5 | ||||||||||||||||||||
M Estep  S Menon | 6 | 6 | M Estep S Menon | 4 | 6 | 7 | |||||||||||||||||||||
B Webb  E Wilborts | 4 | 2 | M Estep S Menon | 6 | 0 | ||||||||||||||||||||||
| E Takeuchi K Tanabe | 6 | 6 | 3 | M Purcell P Rennert | 7 | 6 | |||||||||||||||||||||
| Taisen Kanai Takao Yamamoto | 3 | 4 | E Takeuchi K Tanabe | 2 | 5 | ||||||||||||||||||||||
| J Bailey Nial Brash | 3 | 4 | 3 | M Purcell P Rennert | 6 | 7 | |||||||||||||||||||||
| 3 | M Purcell P Rennert | 6 | 6 | 3 | M Purcell P Rennert | 6 | 4 | 4 | |||||||||||||||||||
| 6 | L Stefanki R Van't Hof | 6 | 6 | 6 | L Stefanki R Van't Hof | 3 | 6 | 6 | |||||||||||||||||||
| Toyokazu Tomogane Nobuo Yoshida | 0 | 1 | 6 | L Stefanki R Van't Hof | 6 | 7 | |||||||||||||||||||||
| D Dowlen I Dupasquier | 6 | 7 | D Dowlen I Dupasquier | 3 | 6 | ||||||||||||||||||||||
| Yoshito Nakamura Takao Suzuki | 3 | 6 | 6 | L Stefanki R Van't Hof | 6 | 6 | |||||||||||||||||||||
 R Cano R Krishnan | 6 | 6 | 2 | T Moor E Teltscher | 3 | 3 | |||||||||||||||||||||
| ? Hoshono Akinori Naguro | 3 | 3 | R Cano R Krishnan | 1 | 6 | ||||||||||||||||||||||
| Weller Evans Bob Weise | 2 | 1 | 2 | T Moor E Teltscher | 6 | 7 | |||||||||||||||||||||
| 2 | T Moor E Teltscher | 6 | 6 | ||||||||||||||||||||||||
Bernard Mitton and Butch Walts were the defending champions but only Walts competed that year with Gary Donnelly.
Mel Purcell and Stan Smith were the defending champions but lost in the quarterfinals to Wojciech Fibak and Sandy Mayer.
Victor Amaya and Hank Pfister were the defending champions.
Heinz Günthardt and Paul McNamee were the defending champions, but McNamee did not participate this year. Günthardt partnered Balázs Taróczy, losing in the first round.
This was the first edition of the event.
Željko Franulović and Balázs Taróczy were the defending champions, but did not participate together this year. Franulović partnered José López-Maeso, losing in the quarterfinals. Taróczy partnered Heinz Günthardt, winning the title.
Larry Stefanki and Robert Van't Hof were the defending champions, but Van't Hof did not participate this year. Stefanki partnered Mike Bauer, losing in the quarterfinals.
Peter Fleming and John McEnroe were the defending champions, but lost in the semifinals to Pat Cash and John Fitzgerald.
Heinz Günthardt and Balázs Taróczy were the defending champions, but lost in the first round to Sammy Giammalva and Greg Holmes.
Fifth-seeded pair Ken Flach and Robert Seguso won the title, sharing $18,000 prize money. The third seeds Heinz Günthardt and Balázs Taróczy lost the final after being penalized the twelfth game of the second set following a dispute with the umpire.
Heinz Günthardt and Balázs Taróczy were the defending champions, but lost in the final to Stefan Edberg and Anders Järryd. The score was 6–3, 6–1.
Steve Denton and Ivan Lendl were the defending champions, but none competed this year. Lendl opted to focus on the singles tournament.
Andrés Gómez and Hans Gildemeister were the defending champions, but Gildemeister did not compete this year. Gómez teamed up with Ricardo Ycaza and lost in the quarterfinals to Heinz Günthardt and Balázs Taróczy.
Peter Fleming and John McEnroe were the defending champions, but McEnroe opted to focus on the singles tournament. Fleming teamed up with Tom Gullikson and lost in the quarterfinals to Stefan Edberg and Anders Järryd.
Andrés Gómez and Ivan Lendl were the defending champions, but lost in the semifinals to Guy Forget and Anders Järryd.
Balázs Taróczy became the 4-time consecutive champion after defeating Heinz Günthardt 6–3, 6–7, 6–4 in the final.
Tom Okker and Balázs Taróczy were the defending champions, but Okker did not compete this year. Taróczy teamed up with Heinz Günthardt and successfully defended his title, by defeating Raymond Moore and Andrew Pattison 6–0, 6–2 in the final.
Heinz Günthardt and Balázs Taróczy were the defending champions, but lost in the first round to Rod Frawley and Chris Lewis.
Ivan Lendl was the defending champion, but he chose to compete at Vienna during the same week, winning that tournament.
Ferdi Taygan and Tim Wilkison were the defending champions, but Taygan did not compete this year. Wilkison teamed up with Chris Lewis and lost in the first round to James Delaney and Ron Hightower.
Year: 1981 - Doubles: Heinz Gunthardt, Balazs Taroczy