Trygve Magnus Haavelmo (trüg'v hävelm) (Skedsmo, 13 december 1911 - Oslo, 28 juli 1999) was een Noors econoom. ###>Trygve Magnus Haavelmo (13 December 1911 – 28 July 1999), born in Skedsmo, Norway, was an influential economist with main research interests centered on the fields of econometrics.