| Sport: | Track and field |
| Event: | Javelin throw |
| Birth Place: | Didymoteicho, Greece |
| Height: | 1.89 m |
| Weight: | 97 kg |
| Pb: | NR 91.69 m (2000) |
Konstadinos Gatsioudis (Greek, Modern (1453-);: Κωνσταντίνος Γκατσιούδης; born 17 December 1973) is a retired Greek track and field athlete who competed in the javelin throw. His personal best throw of 91.69 m, achieved in 2000, is the Greek record.
Born in Didymoteicho, Gatsioudis set a world junior record in 1990 and eight national records during his career. He was named the 1997 Greek Male Athlete of the Year.
| Representing | |||||
|---|---|---|---|---|---|
| 1990 | Plovdiv, Bulgaria | 6th | 69.90 m | ||
| 1992 | Seoul, South Korea | 3rd | 75.92 m | ||
| 1993 | World Championships | Stuttgart, Germany | 17th (q) | 76.70 m | |
| Narbonne, France | 3rd | 77.00 m | |||
| 1994 | European Championships | Helsinki, Finland | 14th (q) | 78.56 m | |
| 1995 | Rome, Italy | 3rd | 82.70 m | ||
| 1996 | Olympic Games | Atlanta, United States | 10th | 81.46 m | |
| 1997 | Bari, Italy | 1st | 89.22 m | ||
| World Championships | Athens, Greece | 3rd | 86.64 m | ||
| 1999 | World Championships | Seville, Spain | 2nd | 89.18 m | |
| 2000 | Olympic Games | Sydney, Australia | 6th | 86.53 m | |
| 2001 | World Championships | Edmonton, Canada | 3rd | 89.95 m | |