Cognomen Ρηγόπουλος (Rigopoulos 
, Ρηγόπουλος ) , in the entire world, is quite a rare family name. The last name Ρηγόπουλος is characteristic of Greece, where it is quite a common surname, North Macedonia, where it is a rare surname, and Australia. Not in comparison with a country's population, it most frequently occurs in Greece, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Rigopoulos | Greece, Australia, Germany, North Macedonia, United States |
| Ρηγόπουλος | Greece |
| θεόδωρος ρηγόπουλος GR (b. 1800) |
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| ανδρέας ρηγόπουλος Greek politician, GR (b. 1821) |
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| ρήγας ρηγόπουλος Greek sociologist (1914-2012), GR (b. 1914) |
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| ρήγας ρηγόπουλος Greek professor, GR (b. 1929) |
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| κώστας ρηγόπουλος Greek actor, GR (b. 1930) |
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| κίμων ρηγόπουλος Greek actor, GR |
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