Family name Ommundsen (Ommundsen 
) , across the world, is a rare last name. The family name Ommundsen is habitual in Norway, where it is quite a common surname, Denmark, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Norway, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Ommundsen | Australia, Norway, Brazil, United States, Mexico |
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reidar amble ommundsen Norwegian association football player and nordic combined skier (1890-1940), NO (b. 1890) |
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| oscar ommundsen (b. 1900) |
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| yngvar ommundsen researcher (b. 1952) |
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| arild østin ommundsen Norwegian film director, NO (b. 1969) |
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| mette ommundsen Norwegian handball player, NO (b. 1977) |
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| anders ommundsen Norwegian carcinologist |
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| marie elise ommundsen Norwegian cyclist (b. 1989) |
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Mr, Rita, Diva, Gage, Gerd, Geir, Lars, Lena, John, Judy, Jill, Tore, Tine, Nina, Elin, Erik, Evan, Inge, Marie, Mette, Silje, Simon, Kurt, Bjã, Atle, Arne, Ms, Mia, Ane, Cid, Kai, Kim, Roy, Dag, Jan, Tor, Simen, Ole, Ove, Mari, Mary, Mark, Mats, Mads, Mona, Siri, Anne, Anja, Odd, and Sonja