| Ian Dewhurst | |
| Birth Date: | 13 November 1990 |
| Birth Place: | Hornsby, New South Wales, Australia |
| Height: | 1.85 m[1] |
| Weight: | 79 kg |
| Sport: | Athletics |
| Event: | 400 metres hurdles |
| Coach: | Marilyn Pearson |
| Education: | University of Western Sydney |
Ian Dewhurst (born 13 November 1990) is an Australian athlete specialising in the 400 metres hurdles. He won a bronze medal at the 2013 Summer Universiade. In addition, he represented his country at the 2014 and 2018 Commonwealth Games without qualifying for the final. In July 2019, he won a gold medal at the 2019 Pacific Games in Apia, where he set a Games record of 50.86 seconds.
His personal best in the event is 49.52 seconds set in Melbourne in 2014.
| Representing | |||||||
|---|---|---|---|---|---|---|---|
| 2013 | Universiade | Kazan, Russia | 3rd | 400 m hurdles | 49.96 | ||
| 5th | 4 × 400 m relay | 3:08.82 | |||||
| 2014 | Commonwealth Games | Glasgow, United Kingdom | 11th (h) | 400 m hurdles | 50.45 | ||
| 6th (h) | 4 × 400 m relay | 3:05.41 | |||||
| 2018 | Commonwealth Games | Gold Coast, Australia | 11th (h) | 400 m hurdles | 49.84 | ||
| 2019 | Pacific Games | Apia | bgcolor=gold | 1st | 400 m hurdles | 50.86 | |