Surname Γιαννούλης (Giannoulis 
, Yannoulis 
, Γιαννούλης ) , in all the world, is quite a rare last name. The surname Γιαννούλης is characteristic of Greece, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Australia, where it is a rare surname. In absolute terms, the name is most common in Greece, the United States, and Canada. Much less frequently, Γιαννούλης is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giannoulis | Greece, United States, Australia, Canada, Germany |
| Yannoulis | Greece, Italy, United States, Australia, Canada |
| Γιαννούλης | Greece |
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γιαννούλης χαλεπάς Greek sculptor, GR (b. 1851) |
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| γιαννούλης ζέρμας GR (b. 1854) |
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νίκος γιαννούλης Dr. Physics-Environmentalist, Mayor of Preveza, GR (b. 1950) |
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| γιαννούλης εμμανουήλ μανωλάς doctor on Naxos 1914-1962, GR (b. 1914) |
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| γιώργος γιαννούλης GR (b. 1915) |
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γιάννης γιαννούλης Greek actor, GR |
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κώστας γιαννούλης Greek footballer, GR (b. 1987) |
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γιαννούλης λαρεντζάκης Greek professional basketball player, GR (b. 1993) |
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δημήτρης γιαννούλης Greek association football player, GR (b. 1995) |
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| χρήστος γιαννούλης Greek politician, GR (b. 1968) |
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| γιαννούλης σαραντίδης Greek director and actor, GR |
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| άγγελος γιαννούλης Greek actor, GR |
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| γιαννούλης καραμάνος Greek politician, GR |
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| σταμάτης γιαννούλης Greek cinematographer and light designer, GR |
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| ιωάννης γιαννούλης swimmer, GR (b. 1988) |
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