Cognomen Sommerfeld (Sommerfeld 
, זומרפלד 
, Соммерфельд 
) , across the world, is a common last name. The last name Sommerfeld is habitual in Germany, where it is quite a rare surname, Canada, and Austria. Not in comparison with a country's population, it is commonest in Germany, the United States, and Canada. Much less frequently, Sommerfeld is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sommerfeld | Germany, Canada, Brazil, Poland, United States |
| זומרפלד | Israel |
| Соммерфельд | Kazakhstan, Russia, Ukraine |
| christian sommerfeld (b. 1583) |
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| jacob sommerfeld (b. 1616) |
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| andreas von sommerfeld (b. 1620) |
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| eva catharina von sommerfeld PL (b. 1642) |
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| elias daniel von sommerfeld German priest, PL (b. 1681) |
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| georg friedrich von sommerfeld (b. 1687) |
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| friedrich sigmund von sommerfeld (b. 1750) |
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| friedrich wilhelm sommerfeld (b. 1782) |
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| karl august wilhelm von sommerfeld DE (b. 1783) |
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| august von sommerfeld (b. 1789) |
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| ernst julius von sommerfeld (b. 1795) |
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ernst von sommerfeld DE (b. 1850) |
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| wilhelm von sommerfeld (b. 1801) |
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arnold sommerfeld German physicist, DE (b. 1868) |
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| wilhelm sommerfeld (1822-1874), RU (b. 1822) |
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