Kati Wilhelm (born 2 August 1976 in Schmalkalden) is a German former professional biathlete. Like most German biathletes she is also a member of the German Armed Forces (Bundeswehr) with the rank of master sergeant (Hauptfeldwebel). She currently resides in Steinbach-Hallenberg, also in the Federal State of Thuringia.
Wilhelm was born in Schmalkalden, in the Federal State of Thuringia, Germany. She started training cross-country skiing as a child in 1983 and was a member of the German cross-country ski team at the 1998 Nagano Olympic Games. In 1999, while attending the Military World Games, she came into contact with biathlon and was hooked on the sport. Her decision to switch to biathlon proved to be a good one. The next year she experienced her first successes including a World Cup victory. During the Salt Lake City Olympic Games in, she was the most decorated female biathlete, winning gold medals in the 7.5 km sprint and the 4 × 6 km relay. She also won a silver medal in the 10 km pursuit. After two years of struggling, she finally moved to Ruhpolding, Bavaria in 2004. She regained her strength and placed second in the 2004–05 World Cup season, defeated only by Frenchwoman Sandrine Bailly. At the 2006 Winter Olympics in Turin, she carried the German flag at the opening ceremony. After winning her third Olympic gold medal in the 10 km pursuit as well as silver in the mass start and with the German relay, she became the best female biathlete at the Olympics ever. Moreover, she dominated the 2005–06 World Cup season, winning six races and the overall World Cup trophy. She was elected "biathlete of the year 2006" as well as "German sportswoman of the year 2006". In total she has 21 IBU Biathlon World Cup wins.