Kristján Eldjárn (1916?-1982) was president of Iceland from 1968 to 1980.

He was an archaeologist and director of the National Museum. Starting as the underdog in the 1968 presidential election, running against ambassador Gunnar Thoroddsen who initially had a 70% lead in the opinion polls, Eldjárn won 65.6% of the vote on a 92.2% turnout. He was re-elected unopposed in 1972 and 1976.

Preceded by:
Ásgeir Ásgeirsson
Presidents of Iceland Succeeded by:
Vigdís Finnbogadóttir