Johan Wahjudi
Johan Wahjudi was an Indonesian badminton player. Though he played some singles at the international level early in his career, he soon became a doubles specialist noted for his alert and consistent play alongside his more mercurial partner Tjun Tjun.
Career
Wahjudi and Tjun won men's doubles in the IBF's first World Championships in 1977.They also won 6 All England Open Badminton Championships between 1974 and 1980 during which time their losses were rare and they were clearly the world's number one team. Wahjudi played on Indonesia's world champion Thomas Cup teams of 1976 and 1979 winning all of his matches in partnership with Tjun Tjun.
Achievements
World Championships
Men's doublesMen's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 1974 | Amjadieh Sport Complex, Tehran, Iran |  Tjun Tjun |  Christian Hadinata Ade Chandra | 15–9, 15–7 | Gold |
Southeast Asian Games
Men's doubles| Year | Venue | Partner | Opponent | Score | Result |
| 1977 | Kuala Lumpur, Malaysia | Tjun Tjun |  Preecha Sopajaree Pichai Kongsirithavorn | Gold |
International Tournaments
Men's doubles| Year | Tournament | Partner | Opponent | Score | Result |
| 1973 | All England | Tjun Tjun | Ade Chandra Christian Hadinata | 1–15, 7–15 | Runner-up |
| 1973 | German Open | Tjun Tjun | Ade Chandra Christian Hadinata | 15–4, 15–9 | Champion |
| 1973 | Denmark Open | Tjun Tjun | Ade Chandra Christian Hadinata | Champion | |
| 1973 | Singapore Open | Tjun Tjun | Rudy Gunawan Christian Hadinata | 15–11, 15–11 | Champion |
| 1974 | All England | Tjun Tjun | Ade Chandra Christian Hadinata | 15–8, 15–6 | Champion |
| 1974 | Denmark Open | Tjun Tjun | Iie Sumirat Christian Hadinata | Champion | |
| 1975 | All England | Tjun Tjun | Ade Chandra Christian Hadinata | 15–11, 15–5 | Champion |
| 1975 | Denmark Open | Tjun Tjun | Ade Chandra Christian Hadinata | 15–6, 15–1 | Champion |
| 1977 | All England | Tjun Tjun | Ade Chandra Christian Hadinata | 15–7, 18–15 | Champion |
| 1978 | All England | Tjun Tjun | Ade Chandra Christian Hadinata | 15–12, 15–8 | Champion |
| 1979 | All England | Tjun Tjun |  Stefan Karlsson Claes Nordin | 17–16, 15–3 | Champion |
| 1980 | All England | Tjun Tjun |  Ray Stevens Mike Tredgett | 10–15, 15–9, 15–10 | Champion |
| 1981 | All England | Tjun Tjun | Rudy Heryanto Hariamanto Kartono | 9–15, 8–15 | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 1972 | Singapore Open | Regina Masli | Chirasak Champakao  Liem Siew Choo | Champion |