The 2009–10 Biathlon World Cup was a multi-race tournament over a season of biathlon, organised by the International Biathlon Union. The season started 2 December 2009 in Östersund, Sweden and ended 28 March 2010 with the Mixed Relay World Championships in Khanty-Mansiysk, Russia. Races of the season were broadcast in Europe on Eurosport channel.

Emil Hegle Svendsen is a retired Norwegian biathlete. He has won eight medals at Winter Olympics and five individual gold medals and seven relay gold medals at World Championships.