Karel Klančnik (30 May 1917 in Mojstrana – 8 December 2009) was a Yugoslavian ski jumper who competed in the late 1940s and early 1950s.
Karel Klančnik, a Yugoslavian ski jumper born on 30 May 1917 in Mojstrana and passed away on 8 December 2009, participated in the sport of ski jumping during the late 1940s and early 1950s.