Atanas Vasilev Andonov (Bulgarian: Атанас Василев Андонов; born July 16, 1955) is a retired male decathlete from Bulgaria. He set his personal best (8199 points) in 1981. Andonov is married to high jumper Lyudmila Andonova.
| Representing | |||||
|---|---|---|---|---|---|
| 1980 | Moscow, Soviet Union | 7th | 7927 points | ||
| 1982 | European Championships | Athens, Greece | 10th | 7904 points | |