Karl Schäfer was an Austrian figure skater and swimmer. In figure skating, he became a two-time Olympic champion at the 1932 Winter Olympics and the 1936 Winter Olympics. He was also a seven-time World champion (1930–1936) and eight-time European champion (1929–1936). As a swimmer, he competed at the 1928 Summer Olympics in the 200 metre breaststroke.

The World Figure Skating Championships, commonly referred to as "Worlds", are an annual figure skating competition sanctioned by the International Skating Union. Medals are awarded in men's singles, women's singles, pair skating, and ice dance. Generally held in March, the World Championships are considered the most prestigious of the ISU Figure Skating Championships. With the exception of the Olympic title, a world title is considered to be the highest competitive achievement in figure skating.