| Sergey Kozulin | |
| Fullname: | Sergey Kozulin |
| Birth Date: | 9 September 1980 |
| Birth Place: | Soviet Union |
| Position: | Defender |
| Years1: | 1996–1998 |
| Clubs1: | Taraz |
| Caps1: | 25 |
| Goals1: | 0 |
| Years2: | 1999 |
| Clubs2: | Sintez |
| Caps2: | 27 |
| Goals2: | 0 |
| Years3: | 2000 |
| Clubs3: | Dostyk Shymkent |
| Caps3: | 12 |
| Goals3: | 0 |
| Years4: | 2000–2003 |
| Clubs4: | Zhenis |
| Caps4: | 79 |
| Goals4: | 3 |
| Years5: | 2004–2005 |
| Clubs5: | Ordabasy |
| Caps5: | 48 |
| Goals5: | 1 |
| Years6: | 2006 |
| Clubs6: | Taraz |
| Caps6: | 22 |
| Goals6: | 0 |
| Years7: | 2007–2010 |
| Clubs7: | Ordabasy |
| Caps7: | 80 |
| Goals7: | 2 |
| Years8: | 2010 |
| Caps8: | 9 |
| Goals8: | 0 |
| Years9: | 2011 |
| Clubs9: | Tarlan |
| Caps9: | 29 |
| Goals9: | 2 |
| Years10: | 2012–2015 |
| Clubs10: | Kyran |
| Caps10: | 98 |
| Goals10: | 3 |
| Totalcaps: | 429 |
| Totalgoals: | 11 |
| Nationalyears1: | 2000–2004 |
| Nationalcaps1: | 6 |
| Nationalgoals1: | 0 |
Sergei Kozulin (born 9 September 1980) is a retired Kazakhstani International footballer who played as a defender.[1]