Nils Emanuel Karlsson (25 June 1917 – 16 June 2012), better known as Mora-Nisse, was a Swedish cross-country skier. He was born near Mora.He won the Olympic gold medal in the 50 km at the 1948 Winter Olympics, a bronze medal in 50 km at the 1950 FIS Nordic World Ski Championships, and a total of 37 gold medals in Swedish national championships, 17 in individual competition. He also won Vasaloppet nine times (in 1943, 1945, 1946, 1947, 1948, 1949, 1950, 1951 and 1953).