Surname Θέμελης (Themelis 
, Θέμελης ) , in all the world, is quite a rare last name. The cognomen Θέμελης is habitual in Greece, where it is quite a common surname, Canada, where it is a very rare surname, and New Zealand. Measured by absolute frequency, the name is most common in Greece, the United States, and Canada. Very seldom, Θέμελης is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Themelis | Greece, Germany, South Africa, Canada, United States |
| Θέμελης | Greece |
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δημήτριος θέμελης GR (b. 1772) |
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| ιωάννης θέμελης Greek soldier, GR (b. 1800) |
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| γιώργος θέμελης Greek writer (1900-1976), GR (b. 1900) |
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| νικόλαος θέμελης Greek politician, GR (b. 1922) |
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| γιωργος θέμελης (b. 1915) |
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| πέτρος θέμελης Greek archaeologist, GR (b. 1936) |
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| νίκος θέμελης Greek politician and writer, GR (b. 1947) |
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| θέμελης γλυνάτσης Greek director, GR |
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