Icelandic Presidents and Prime Ministers: 1 prime minister
(prime minister) Hannes Hafstein   1904-1909; 1912-1914  
Nobel Prize Winners: 1 physics
(physics) Hannes Alfvén   1970  
Notable Athletes: 1 soccer, 1 track
(track) Hannes Kolehmainen   1889-1966  
(soccer) Hannes Þór Halldórsson   1984-  
Notable Scientists and Inventors: 1 physicist
Hannes Alfvén   1908-1995  
Olympic Medalists: 1 bronze, 1 silver/bronze, 1 silver/gold
(silver/gold) Hannes Kolehmainen   1912; 1920   10000 m; 5000 m; individual cross country; team cross country; marathon  
(silver/bronze) Kaarlo Maaninka (a.k.a. Hannes)   1980   10000 m; 5000 m  
(bronze) Hannes Aigner   2012   canoe slalom