| Kristian Kjelling | |
| Fullname: | Kristian Cato Walby Kjelling |
| Birth Date: | 8 September 1980 |
| Birth Place: | Oslo, Norway |
| Position: | Left back |
| Youthclubs1: | Kjelsås |
| Youthyears1: | –1998 |
| Years1: | 1998–1999 |
| Clubs1: | Vestli IL |
| Years2: | 1999–2002 |
| Clubs2: | Drammen HK |
| Years3: | 2002–2006 |
| Clubs3: | CB Ademar León |
| Years4: | 2006–2009 |
| Clubs4: | Portland San Antonio |
| Years5: | 2009–2013 |
| Clubs5: | Aalborg Håndbold |
| Years6: | 2013–2015 |
| Clubs6: | Bjerringbro-Silkeborg |
| Years7: | 2015–2016 |
| Clubs7: | Drammen HK |
| Nationalyears1: | 2001–2014 |
| Nationalteam1: | Norway |
| Nationalcaps1: | 159[1] |
| Nationalgoals1: | 615 |
Kristian Cato Walby Kjelling (in Norwegian pronounced as /ˈkrɪ̀stɪjɑn ˈçɛ̀lːɪŋ/; born 8 September 1980) is a retired Norwegian handball player, who was part of the national team from 2001 to 2014. He last played for the Norwegian club Drammen HK. He is now their coach.
Before re-joining Drammen HK he played for the Spanish clubs Portland San Antonio and Ademar León and the Danish clubs AaB Håndbold and Bjerringbro-Silkeborg and the Norwegian clubs Kjelsås, Vestli, and Drammen.
Kjelling won King's cup in 2002 and the EHF Cup-Winners Cup in 2004/2005 with Ademar Leon.