| Sergey Kosov | |
| Fullname: | Sergey Andreyevich Kosov |
| Birth Date: | 31 January 1986 |
| Position: | Goalkeeper |
| Youthyears2: | 2002–2003 |
| Youthclubs2: | Volyn Lutsk |
| Years1: | 2002 |
| Clubs1: | FC PetroLesPort Saint Petersburg |
| Years2: | 2004–2005 |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2006 |
| Caps3: | 0 |
| Goals3: | 0 |
| Years4: | 2006 |
| Clubs4: | OPA |
| Years5: | 2006 |
| Clubs5: | FC Lynx |
| Caps5: | 14 |
| Goals5: | 0 |
| Years6: | 2008 |
| Clubs6: | OPA |
| Caps6: | 8 |
| Goals6: | 0 |
| Years7: | 2008–2009 |
| Clubs7: | FC Nistru Otaci |
| Caps7: | 14 |
| Goals7: | 0 |
| Years8: | 2010 |
| Clubs8: | FK Šiauliai |
| Caps8: | 9 |
| Goals8: | 0 |
| Years9: | 2011 |
| Clubs9: | FK Jūrmala-VV |
| Caps9: | 8 |
| Goals9: | 0 |
Sergey Andreyevich Kosov (ru|Серге́й Андреевич Косов; born 31 January 1986) is a former Russian professional footballer.
In 2010, he made an excellent debut for FK Šiauliai and was one of the best goalkeepers in Lithuanian A Lyga. After the expiry of the contract on 15 November 2010, player moved to FK Jūrmala-VV, playing in the Latvian Higher League. After playing 8 league games he was released.