Family name Triadis (Triadis 
) , in the world, is a rare last name. The last name Triadis is habitual in Greece, where it is quite a rare surname, Switzerland, where it is a rare surname, and Austria. Measured by absolute frequency, it is commonest in Greece, Germany, and Switzerland. Also, Triadis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Triadis | Switzerland, Greece, Austria, United States, Germany |
| dimetre triadis Ph.D. University of Melbourne 2007 |
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| panagiotis triadis Greek footballer, DE (b. 1992) |
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| alexis triadis Greek footballer, DE (b. 1997) |
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