Ragnar Anton Kittil Frisch ( March 3, 1895 in Christiania, now Oslo, † 31 January 1973) was a Norwegian economist.
Fresh studied economics at the University of Oslo, after which he went to Paris and England. In 1925 he was awarded his doctorate in mathematical statistics. He was appointed assistant professor at the University of Oslo. In 1931 he became a professor. In 1932 he founded the Rockefeller -funded Institute of Economics and became its research director. On 29 December 1930 he founded with Fisher and Roos, the Econometric Society, which is considered as the birth of econometrics.
Frisch's granddaughter is the Norwegian television presenter Nadia Hasnaoui.
For his analysis of economic processes and the development of dynamic economic models, he received in 1969 together with Jan Tinbergen, the price of Economics at the Swedish Riksbank in Memory of Alfred Nobel. Since 1952 he was socio straniero the Accademia Nazionale dei Lincei in Rome, the 1960 International Antonio Feltrinelli Prize - awarded him.