Cognomen Katsoulis (Katsoulis 
) , worldwide, is quite a rare last name. The family name Katsoulis is habitual in Greece, where it is quite a common surname, New Zealand, where it is quite a rare surname, and Romania, where it is a rare surname. In absolute terms, this name is the most popular in Greece, the United States, and Romania.
| VARIANT | COUNTRY |
|---|---|
| Katsoulis | Romania, Canada, Australia, United States, Greece |
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krateros katsoulis Greek actor, CH (b. 1971) |
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| giorgos katsoulis Greek water polo player (b. 1963) |
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| dimitris katsoulis chemistry researcher |
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| michail katsoulis researcher |
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| elias g. katsoulis Ph.D. University of Athens 1989 |
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| sarah katsoulis Australia swimmer, AU (b. 1984) |
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