Cognomen Ηλιόπουλος (Iliopoulos 
, Ηλιόπουλος ) , throughout the world, is quite a common last name. The family name Ηλιόπουλος is habitual in Greece, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Cyprus. Measured by absolute frequency, this name is the most popular in Greece, Slovakia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Iliopoulos | Greece, Australia, Canada, Slovakia, United States |
| Ηλιόπουλος | Greece |
Eliopoulos, Eliopulos, and Илиопулос
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τιμολέων ηλιόπουλος Greek politician and university professor, GR (b. 1856) |
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| ευστάθιος ηλιόπουλος Greek politician, GR (b. 1816) |
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ιωάννης ηλιόπουλος Greek physicist, GR (b. 1940) |
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| βάσος ηλιόπουλος (b. 1885) |
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| σταύρος ηλιόπουλος Greek politician and lawyer, GR (b. 1904) |
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| ντίνος ηλιόπουλος Greek actor, GR (b. 1915) |
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μάριος ηλιόπουλος Greek musician, GR (b. 1969) |
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παναγιώτης ηλιόπουλος Greek politician, GR (b. 1978) |
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νάσος ηλιόπουλος Greek politician, GR (b. 1983) |
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| γιώργος ηλιόπουλος GR (b. 1947) |
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| γιώργος ηλιόπουλος Greek actor and screenwriter, GR (b. 1971) |
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| βαγγέλης ηλιόπουλος GR (b. 1964) |
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| γιάννης ηλιόπουλος Greek basketball player, GR (b. 1979) |
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| δημήτρης ηλιόπουλος Greek actor, GR |
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| πάνος ηλιόπουλος Greek actor, GR |
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Ηλίας, Χρήστος, Δημήτρης, Νίκος, Λάμπρος, Μάριος, Αντώνης, Αλέξανδρος, Γιώργος, Βασίλης, Θανάσης, Παντελής, Κωνσταντίνος, and Παναγιώτης