Namesakes
Ólafur Thors
(m) 1892-1964 
Icelandic Presidents and Prime Ministers 1942; 1944-1947; 1949-1950; 1953-1956; 1959-1963 (prime minister)
Ólafur Jóhannesson
(m) 1913-1984
Icelandic Presidents and Prime Ministers 1971-1974; 1978-1979 (prime minister)
Ólafur Ragnar Grímsson
(m) 1943-
Icelandic Presidents and Prime Ministers 1996-2016 (president)