Cognomen Matthíasson (Matthíasson 
) , around the world, is a rare family name. The cognomen Matthíasson is habitual in Northern Europe, particularly Iceland, where it is quite a common surname.
| VARIANT | COUNTRY |
|---|---|
| Matthíasson | Iceland |
| matthildur kvaran matthíasson IS (b. 1889) |
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karl v. matthíasson Icelandic politician, IS (b. 1952) |
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| halldór matthíasson Icelandic cross-country skier, IS (b. 1949) |
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| eðvarð matthíasson (b. 1950) |
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| ari matthíasson Icelandic actor, IS (b. 1964) |
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| magnús matthíasson icelandic basketball player, IS (b. 1967) |
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| kristján matthíasson researcher |
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| matthías matthíasson Icelandic musician (b. 1980) |
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| þóra matthíasson IS |
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