Fredrik Otto Lindeman (born 3 March 1936) is a Norwegian linguist.
He is professor emeritus in historical linguistics at University of Oslo.
Together with Harald Bjorvand, in 2000 he published 1100 pages of Våre arveord, the first etymological dictionary for Norwegian since Hjalmar Falk and Alf Torp's Etymologisk ordbog over det danske og det norske sprog (1903–06).
Lindeman has translated Sagaen om Cú Chulainns sykeleie og Emers skinnsyke from Old Irish and Vardan og armenernes krig from Old Armenian for Thorleif Dahls kulturbibliotek.
He is a member of the Norwegian Academy of Science and Letters.