Throughout the world, Tryggvi (Trygve 
, Tryggvi 
, Tryggve ) is quite a rare masculine first name. The given name Tryggvi is habitual in Northern Europe, particularly Iceland, where it is quite a common boy's name, Norway, where it is quite a rare masculine name, and Sweden. Measured by absolute frequency, the name is most common in Norway, the United States, and Sweden. Very seldom, Tryggvi is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Trygve | Sweden, Norway, Spain, United States, Denmark |
| Tryggvi | Iceland, Spain, Canada, United States, Denmark |
| Tryggve | Sweden, Norway, United States, Canada |
| Trygvi | Denmark |
| tryggvi gunnarsson Icelandic politician, IS (b. 1835) |
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tryggvi þórhallsson Prime Minister of iceland (1889-1935), IS (b. 1889) |
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| tryggvi magnússon Icelandic association football player (1896-1943), IS (b. 1896) |
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| tryggvi emilsson Icelandic writer (1902-1993), IS (b. 1902) |
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| tryggvi ófeigsson (b. 1896) |
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| tryggvi magnússon (b. 1900) |
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| tryggvi julius oleson Canadian historian, CA (b. 1912) |
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tryggvi hlinason Icelandic basketball player, IS (b. 1997) |
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| tryggvi þór herbertsson Icelandic politician, IS (b. 1963) |
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| tryggvi helgason Icelandic swimmer, IS (b. 1963) |
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| tryggvi gunnarsson (b. 1955) |
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| tryggvi guðmundsson Icelandic footballer, IS (b. 1974) |
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| tryggvi m. baldvinsson (b. 1965) |
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| tryggvi nielsen badminton player, IS (b. 1976) |
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| tryggvi stefansson researcher |
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Sson, Emilsson, Einarsson, Hardarson, ºsson, Þorsteinsson, Marinosson, Madarieta, Magnusson, Sigurðsson, Stefansson, Stefánsson, Guðmundsson, Jakobsson, Tryggvason, Sigurdsson, Skarphéðinsson, Gunnarsson, Haraldsson, Korneliusson, Kristjánsson, Hermanniusson, Jóhannsson, Larusson, Gíslason, Björnsson, Alle, Rnsson, Mundsson, Másson, Kamban, Gígjuson, Lindal, Thayer, Olsson, Arnason, Valdimarsson, Agnarsson, Pálsson, Jackson, Jonsson, Jónsson, Helgason, Hreinsson, Árnason, Magnússon, Mcdonald, Sveinsson, Palsson, and Thorsteinsson