Family name Riga (Riga 
, 日嘎 
, 里加 ) , in the entire world, is a common last name. The surname Riga is habitual in Greece, where it is quite a common surname, Cyprus, and Latvia, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Greece, Italy, and Ukraine. Likewise, Riga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riga | Indonesia, Italy, Philippines, Greece, Democratic Republic of the Congo |
| 里加, 日嘎 | China |
| Рига | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| petrus riga French poet, FR (b. 1140) |
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| hanul of riga Latvian merchant, LT (b. 1301) |
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| isaak riga DE (b. 1650) |
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| antonín riga Czech sculptor, CZ (b. 1660) |
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| n. j. riga BE (b. 1653) |
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| jean riga Zuid-Nederlands; schilder; 1680; Luik (stad); 1725-02-19; Luik (stad), BE (b. 1680) |
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| cyrillus riga CZ (b. 1689) |
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| pierre françois riga Belgian musician (1831-1892), BE (b. 1831) |
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| franz riga BE (b. 1831) |
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| servais riga BE (b. 1878) |
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graziella riga Italian politician, IT (b. 1941) |
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jean-claude riga film director and producer (born 1952), BE (b. 1952) |
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josé riga Belgian association football player, BE (b. 1957) |
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tarmo riga Estonian mountaineer (1971-2015), EE (b. 1971) |
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jane riga Estonian mountaineer (1973-2015), EE (b. 1973) |
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