Claes Urban Källén[1] (born 12 May 1943) is a Swedish curler.

[2] He is a 1970 World Men's bronze medallist and a 1970 Swedish men's curling champion.

In 1971 he was inducted into the Swedish Curling Hall of Fame.

Claes' older brother Christer was also a curler and his teammate.

This biographical article relating to curling in Sweden is a stub.