Cognomen Tronstad (Tronstad 
) , in the world, is quite a rare family name. The last name Tronstad is habitual in Norway, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Sweden, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Norway, the United States, and Sweden. Much less frequently, Tronstad is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tronstad | Norway, Cyprus, Sweden, United States, Denmark |
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leif tronstad Norwegian scientist and military officer, NO (b. 1903) |
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elsbeth tronstad Norwegian politician (b. 1956) |
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| helen tronstad Swedish meteorologist, SE (b. 1952) |
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| bjørn tronstad Norwegian footballer, NO (b. 1957) |
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| ole tronstad Norwegian farmer (b. 1957) |
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| tyra teodora tronstad Norwegian author, NO (b. 1972) |
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| elia ardiles tronstad Norwegian singer (b. 1978) |
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| rune r tronstad researcher (ORCID 0000-0002-7227-5762) |
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| gjertrud ogmundsdottir av tronstad - Bef 1438 |
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| karl j tronstad researcher |
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| tron vedul tronstad researcher |
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| oystein tronstad researcher ORCID ID = 0000-0001-7751-3267 |
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| lusha tronstad researcher ORCID ID = 0000-0002-1845-0267 |
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| tomas tronstad researcher |
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| sondre tronstad Norwegian footballer (b. 1995) |
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Mr, Kari, Kine, Knut, Ruth, Rune, Gail, Guri, Lars, Leif, Lena, Lene, Luke, John, Jorn, Joel, Jean, Tone, Trig, Nils, Nina, Elia, Bjã, Erik, Chad, Anny, Ms, Alf, Per, Dan, Dag, Jan, Jon, Jen, Jã, Tom, Hã, Ida, Ole, Oda, Odd, Mari, Mary, Mark, Mike, Anna, Anne, Atle, and Even