Family name Kladis (Kladis 
) , all over the world, is quite a rare surname. The family name Kladis is habitual in Greece, where it is quite a common surname, Australia, where it is a rare surname, and the United States, where it is a very rare surname. Very seldom, Kladis is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kladis | Greece, Australia, Argentina, United States, India |
| georgios kladis Boxer (b. 1906) |
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| danny kladis racecar driver, US (b. 1917) |
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| konstantinos kladis Greek footballer (b. 1958) |
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| nick kladis college basketball player (1950–1952) Loyola (IL) |
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| danny kladis college basketball player (1976–1976) Loyola (IL) |
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