Kristian Cato Walby Kjelling (Norwegian pronunciation: [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.

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.

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