| Shon Ju-il | |
| Birth Date: | 6 October 1969 |
| Height: | 1.75 m[1] |
| Weight: | 69 kg |
| Sport: | Athletics |
| Event: | 400 metres |
Shon Ju-il (; born 6 October 1969) is a South Korean former sprinter who specialised in the 400 metres. He represented his country at the 1996 Summer Olympics as well as two outdoor and one indoor World Championships. In addition, he won a silver medal at the 1994 Asian Games.
His personal bests in the event are 45.37 seconds outdoors (Seoul 1994) and 46.88 seconds indoors (Tianjin 1996). Both results are standing national records.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1994 | Asian Games | Bangkok, Thailand | bgcolor=silver | 2nd | 400 m | 45.87 |
| bgcolor=gold | 1st | 4 × 400m relay | 3:10.19 | |||
| 1995 | World Indoor Championships | Barcelona, Spain | 5th | 400 m | 46.90 | |
| World Championships | Gothenburg, Sweden | 27th (qf) | 400 m | 46.31 | ||
| 1996 | Olympic Games | Atlanta, United States | 42nd (h) | 400 m | 46.74 | |
| 1997 | World Championships | Athens, Greece | 30th (qf) | 400 m | 47.36 | |
| 1998 | Asian Championships | Fukuoka, Japan | bgcolor=silver | 2nd | 4 × 400m relay | 3:04.44 |
| Asian Games | Bangkok, Thailand | 6th | 400 m | 46.19 | ||
| 3rd | 4 × 400m relay | 3:05.72 | ||||