Last name Þorvarðarson (Þorvarðarson 
) , globally, is a very rare surname. The family name Þorvarðarson is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Þorvarðarson | Iceland |
| gunnar þorvarðarson Icelandic basketball player and coach, IS (b. 1951) |
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| einar þorvarðarson Icelandic handball player, IS (b. 1957) |
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| erlendur þorvarðarson |
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