| Event: | Badminton |
| Games: | 1966 Asian Games |
| Venue: | Kittikachorn Stadium |
| Dates: | 10–20 December |
| Prev: | 1962 |
| Next: | 1970 |
Badminton tournaments were held for the second time at the fifth Asian Games in 1966 in Indoor Stadium Huamark, Bangkok from 10 to 20 December 1966.
Singles, doubles, and team events were contested for both men and women. Mixed Doubles were also contested.
| Men's singles | |||
| Men's doubles | Ng Boon Bee Tan Yee Khan | Ang Tjin Siang Tjoa Tjong Boan | Tan King Gwan Abdul Patah Unang |
Charoen Wattanasin Tuly Ulao | |||
| Men's team | Chavalert Chumkum Narong Bhornchima Raphi Kanchanaraphi Channarong Ratanaseangsuang Sangob Rattanusorn Tuly Ulao Charoen Wattanasin | Eddy Choong Khor Cheng Chye Billy Ng Ng Boon Bee Tan Yee Khan Teh Kew San Yew Cheng Hoe | Ho Wen-ming Lin Chiung-chih Cheng Wen-chiao Huang Liang-en Shih Chin-piao |
Masao Akiyama Ippei Kojima Takeshi Miyanaga Eiichi Sakai | |||
| Women's singles | |||
| Women's doubles | Minarni Retno Kustijah | Hiroe Amano Tomoko Takahashi | Pratuang Pattabongs Achara Pattabongs |
Noriko Takagi Kazuko Goto | |||
| Women's team | Hiroe Amano Kazuko Goto Noriko Takagi Tomoko Takahashi | Sumol Chanklum Boobpa Kaentong Achara Pattabongs Pratuang Pattabongs | Kang Young-sin Lee Young-soon |
Retno Kustijah Minarni Nurhaena Tan Tjoen Ing | |||
| Mixed doubles | Teh Kew San Rosalind Singha Ang | Eddy Choong Tan Gaik Bee | Wong Pek Sen Minarni |
Tjoa Tjong Boan Retno Kustijah |
| Discipline | Winner | Runner-up | Score |
|---|---|---|---|
| Men's singles | Ang Tjin Siang |  Masao Akiyama | 15–2, 15–5 |
| Wong Pek Sen | Kyi Nyunt | 15–8, 15–3 | |
| Women's singles | Noriko Takagi | Minarni | 11–1, 11–7 |
 Sumol Chanklum | Tomoko Takahashi | 12–9, 8–11, 11–4 | |
| Men's doubles | Ng Boon Bee Tan Yee Khan | Tan King Gwan Abdul Patah Unang | 15–7, 15–9 |
| Ang Tjin Siang Tjoa Tjong Boan | Charoen Wattanasin Tuly Ulao | 11–15, 15–7, 15–10 | |
| Women's doubles | Hiroe Amano Tomoko Takahashi | Achara Pattabongs Pratuang Pattabongs | 11–15, 17–16, 15–4 |
| Minarni Retno Kustijah | Noriko Takagi Kazuko Goto | 15–5, 15–11 | |
| Mixed doubles | Eddy Choong Tan Gaik Bee | 6–15, 17–16, 15–9 | |
| Teh Kew San Rosalind Singha Ang | Wong Pek Sen Minarni | 3–15, 15–8, 15–6 |
| Discipline | Winner | Finalist | Score | |
|---|---|---|---|---|
| Men's singles | Ang Tjin Siang | Wong Pek Sen | 5–3 retired | |
| Women's singles | Noriko Takagi | Sumol Chanklum | 11–0, 11–4 | |
| Men's doubles | Ng Boon Bee Tan Yee Khan | Ang Tjin Siang Tjoa Tjong Boan | 12–15, 15–8, 18–16 | |
| Women's doubles | Minarni Retno Kustijah | Hiroe Amano Tomoko Takahashi | 15–9, 15–6 | |
| Mixed doubles | Teh Kew San Rosalind Singha Ang | Eddy Choong Tan Gaik Bee | 18–13, 11–15, 15–5 | |
| Men's team | 5—4 | |||
| Women's team | 4—3 |