Yoon Won-il should not be confused with Yoon Won-il (born 1986).
| Yoon Won-il | |
| Birth Date: | 31 March 1983 |
| Currentclub: | Pohang Steelers |
| Clubnumber: | 34 |
| Position: | Left back |
| Youthclubs1: | Pohang Jecheol Technical High School |
| Years1: | 2003 |
| Years2: | 2004–2005 |
| Years3: | 2006–2010 |
| Years4: | 2011– |
| Clubs3: | Incheon United |
| Clubs4: | Pohang Steelers |
| Caps1: | 0 |
| Caps2: | 22 |
| Caps3: | 55 |
| Caps4: | 2 |
| Goals1: | 0 |
| Goals2: | 1 |
| Goals3: | 1 |
| Goals4: | 0 |
| Pcupdate: | 4 December 2012 |
Yoon Won-il (Korean: 윤원일; born March 31, 1983) is a South Korean football player who currently plays for Pohang Steelers in the K-League. He also played for Suwon Samsung Bluewings, Daegu FC and Incheon United.