Family name Thormodsson (Thormodsson 
) , globally, is a rare cognomen. The cognomen Thormodsson is habitual in Iceland, where it is quite a common surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thormodsson | Iceland, United States |
| gauti thormodsson ice hockey player (1987-) (b. 1987) |
|
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| egill thormodsson ice hockey player (1991-) (b. 1991) |
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