Cognomen Seyfried (Seyfried 
, Зайфрид 
) , all over the world, is quite a rare last name. The family name Seyfried is habitual in Western Europe, particularly Austria, where it is quite a rare surname, Germany, and France, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Austria. Much less frequently, Seyfried is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seyfried | Germany, France, Poland, United States, Austria |
| Зайфрид | Russia |
| seyfried schweppermann DE (b. 1260) |
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| seyfried fasser (b. 1400) |
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| seyfried pfinzing (b. 1444) |
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| seyfried von windisch-grätz (b. 1485) |
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| seyfried pfinzing (b. 1485) |
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seyfried von breuner AT (b. 1538) |
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| johannes seyfried DE (b. 1502) |
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seyfried christoph von breuner Austrian jurist, AT (b. 1569) |
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| seyfried, freiherr von dietrichstein - 1583 (b. 1538) |
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| seyfried rybisch PL (b. 1530) |
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| seyfried von promnitz (b. 1534) |
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| paul seyfried (b. 1541) |
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| christian seyfried DE (b. 1581) |
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| johannes seyfried (b. 1610) |
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| samuel seyfried (b. 1622) |
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