Sergey Sergeyevich Voynov (uz|Сергей Сергеевич Войьнов; born February 26, 1977) is an Uzbek athlete who competes in the javelin throw. His personal best throw is 84.80 metres, achieved in 2000.
| Representing | |||||
|---|---|---|---|---|---|
| 1994 | Asian Junior Championships | Jakarta, Indonesia | 3rd | 71.86 m | |
| World Junior Championships | Lisbon, Portugal | 4th | 72.74 m | ||
| 1995 | Asian Championships | Jakarta, Indonesia | 3rd | 73.46 m | |
| Universiade | Fukuoka, Japan | 8th | 72.88 m | ||
| 1996 | Olympic Games | Atlanta, United States | 24th (q) | 76.30 m | |
| World Junior Championships | Sydney, Australia | 1st | 79.78 m | ||
| 1997 | World Championships | Athens, Greece | 27th (q) | 74.32 m | |
| 1998 | Asian Games | Bangkok, Thailand | 1st | 79.70 m | |
| 1999 | World Championships | Seville, Spain | 19th (q) | 77.35 m | |
| 2000 | Olympic Games | Sydney, Australia | 25th (q) | 75.89 m | |
| 2001 | World Championships | Edmonton, Canada | 23rd (q) | 76.77 m | |
| 2002 | Asian Championships | Colombo, Sri Lanka | 2nd | 79.70 m | |
| Asian Games | Busan, South Korea | 3rd | 78.74 m | ||
| 2003 | World Championships | Paris, France | 15th (q) | 76.66 m | |
| Asian Championships | Manila, Philippines | 3rd | 76.09 m | ||
| 2004 | Olympic Games | Athens, Greece | 24th (q) | 74.68 m | |
| 2006 | Asian Games | Doha, Qatar | 9th | 66.89 m | |