| Yoon Yeo-San | |
| Fullname: | Yoon Yeo-San |
| Birth Date: | 9 July 1982 |
| Birth Place: | South Korea |
| Currentclub: | Tianjin Songjiang |
| Position: | Defender |
| Youthclubs1: | Hannam University |
| Years1: | 2004–2005 |
| Clubs1: | Incheon United |
| Years2: | 2006–2011 |
| Clubs2: | Daegu FC |
| Years3: | 2010–2011 |
| Clubs3: | → Sangju Sangmu (army) |
| Years4: | 2014– |
| Clubs4: | Tianjin Songjiang |
| Caps1: | 0 |
| Goals1: | 0 |
| Caps2: | 50 |
| Goals2: | 1 |
| Caps3: | 13 |
| Goals3: | 0 |
| Caps4: | 0 |
| Goals4: | 0 |
| Pcupdate: | 25 July 2011 |
| Hangul: | 윤여산 |
| Hanja: | 尹如山 |
| Rr: | Yun Yeo-san |
| Mr: | Yun Yŏsan |
Yoon Yeo-San (; born 9 July 1982) is a South Korean footballer who currently plays as a defender.
Yoon began his professional career with Incheon United, joining the club as a foundation squad member when it entered the K-League in 2004. However, in a two-year spell with the club, he made only a single appearance, in a 2005 FA Cup match.
Yoon then moved to Daegu FC. Initially, he did not play a significant on-field role, although over time he has become a regular starter, playing 26 games in total for the 2009 season. In November 2009, he moved to Sangju Sangmu while he completed his two-year military obligations.
In July 2011, he related 2011 South Korean football betting scandal.
| Club performance | League | Cup | League Cup | Continental | Total | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Club | League | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |
| South Korea | League | KFA Cup | League Cup | Asia | Total | ||||||||
| 2004 | Incheon United | K-League | 0 | 0 | 0 | 0 | 0 | 0 | – | 0 | 0 | ||
| 2005 | 0 | 0 | 1 | 0 | 0 | 0 | – | 1 | 0 | ||||
| 2006 | Daegu FC | 5 | 0 | 1 | 0 | 6 | 0 | – | 12 | 0 | |||
| 2007 | 15 | 0 | 1 | 0 | 3 | 0 | – | 19 | 0 | ||||
| 2008 | 10 | 1 | 2 | 0 | 3 | 0 | – | 15 | 1 | ||||
| 2009 | 20 | 0 | 2 | 0 | 4 | 0 | – | 26 | 0 | ||||
| 2010 | Sangju Sangmu | 12 | 0 | 2 | 0 | 4 | 0 | – | 18 | 0 | |||
| 2011 | 11 | 0 | 2 | 0 | 1 | 0 | – | 14 | 0 | ||||
| Career total | 73 | 1 | 11 | 0 | 21 | 0 | – | 105 | 1 | ||||