| Played For: | Sokil Kyiv HC Berkut-Kyiv Khimik Voskresensk Traktor Chelyabinsk Dynamo Moscow CSKA Moscow Neman Grono |
| Position: | Left wing |
| Shoots: | Right |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lb: | 192 |
| Ntl Team: | Ukraine |
| Birth Date: | October 24, 1979 |
| Birth Place: | Kyiv, Ukrainian SSR, USSR |
| Career Start: | 1997 |
| Career End: | 2016 |
Kostiantyn Viktorovich Kasianchuk (Костянтин Вікторович Касянчук; born 24 October 1979) is a Ukrainian retired professional ice hockey left wing who last played for HK Neman Grodno of the Belarusian Extraleague. Internationally he played for Ukraine in multiple World Championships.
| Team | League | GP | GP | G | A | Pts | PIM | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1995–96 | Sokil Kyiv | EEHL | 2 | 1 | 1 | 2 | 0 | — | — | — | — | — | ||
| 1997–98 | Sokil Kyiv | EEHL | 34 | 16 | 9 | 25 | 22 | — | — | — | — | — | ||
| 1998–99 | Sokil Kyiv | EEHL | 31 | 6 | 3 | 9 | 4 | — | — | — | — | — | ||
| 1999–00 | Sokil Kyiv | EEHL | 48 | 18 | 13 | 31 | 20 | — | — | — | — | — | ||
| 2000–01 | Sokil Kyiv | EEHL | 30 | 6 | 16 | 22 | 39 | — | — | — | — | — | ||
| 2001–02 | Vityaz Chekhov | Russia2 | 54 | 13 | 27 | 40 | 44 | 11 | 3 | 4 | 7 | 6 | ||
| 2002–03 | Sokil Kyiv | EEHL | 13 | 3 | 4 | 7 | 10 | — | — | — | — | — | ||
| 2002–03 | Vityaz Chekhov | Russia2 | 10 | 3 | 8 | 11 | 14 | — | — | — | — | — | ||
| 2002–03 | Khimik Voskresensk | Russia2 | 13 | 5 | 2 | 7 | 2 | 14 | 7 | 1 | 8 | 4 | ||
| 2003–04 | Khimik Voskresensk | Russia | 37 | 1 | 2 | 3 | 16 | — | — | — | — | — | ||
| 2004–05 | Sokil Kyiv | Belarus | 24 | 6 | 7 | 13 | 16 | 12 | 1 | 5 | 6 | 10 | ||
| 2004–05 | Sokil Kyiv | Ukraine | — | — | — | — | — | 2 | 1 | 0 | 1 | 2 | ||
| 2005–06 | Traktor Chelyabinsk | Russia2 | 43 | 11 | 22 | 33 | 18 | 9 | 4 | 4 | 8 | 6 | ||
| 2005–06 | Traktor Chelyabinsk-2 | Russia3 | 2 | 1 | 2 | 3 | 0 | — | — | — | — | — | ||
| 2006–07 | Traktor Chelyabinsk | Russia | 51 | 14 | 13 | 27 | 80 | — | — | — | — | — | ||
| 2007–08 | Traktor Chelyabinsk | Russia | 53 | 15 | 28 | 43 | 63 | 3 | 1 | 0 | 1 | 10 | ||
| 2008–09 | HC Dynamo Moscow | KHL | 46 | 12 | 6 | 18 | 26 | 6 | 1 | 0 | 1 | 4 | ||
| 2009–10 | HC CSKA Moscow | KHL | 12 | 0 | 4 | 4 | 8 | — | — | — | — | — | ||
| 2009–10 | Traktor Chelyabinsk | KHL | 36 | 6 | 10 | 16 | 26 | 4 | 1 | 0 | 1 | 6 | ||
| 2010–11 | Sokil Kyiv | Belarus | 13 | 5 | 8 | 13 | 16 | — | — | — | — | — | ||
| 2010–11 | Traktor Chelyabinsk | KHL | 41 | 4 | 9 | 13 | 30 | — | — | — | — | — | ||
| 2011–12 | Sokil Kyiv | Ukraine | 42 | 25 | 47 | 72 | 22 | — | — | — | — | — | ||
| 2012–13 | HC Dynamo Moscow | KHL | 35 | 7 | 6 | 13 | 49 | 19 | 3 | 4 | 7 | 4 | ||
| 2013–14 | HC Dynamo Moscow | KHL | 15 | 1 | 1 | 2 | 4 | — | — | — | — | — | ||
| 2013–14 | Dynamo Balashikha | VHL | 14 | 8 | 5 | 13 | 14 | — | — | — | — | — | ||
| 2014–15 | Buran Voronezh | VHL | 31 | 6 | 14 | 20 | 22 | — | — | — | — | — | ||
| 2015–16 | HK Neman Grodno | Belarus | 32 | 6 | 16 | 22 | 40 | — | — | — | — | — | ||
| KHL totals | 185 | 30 | 36 | 66 | 143 | 29 | 5 | 4 | 9 | 14 | ||||
| Russia totals | 141 | 30 | 43 | 73 | 159 | 3 | 1 | 0 | 1 | 10 | ||||