Frithjof Clausen (13 March 1916 – 9 May 1998) was a Norwegian wrestler.
He won twelve national titles in wrestling, and competed at the 1948 and 1952 Olympic Games.
[2] Clausen represented the clubs Kolbotn IL and Sporveiens AIL.
His early career was spoiled by the Second World War, but in 1947 he won his second national title, and then became national champion in Greco-Roman wrestling in 1948, 1949, 1950, 1951,1952, 1954, 1955 and 1956.
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