Last name Radda (รัดดา 
, Radda 
, رادا 
) , in all the world, is quite a rare family name. The family name Radda is characteristic of Austria, where it is quite a rare surname, Ethiopia, where it is a rare surname, and Czechia. Not in comparison with a country's population, it is the most numerous in Ethiopia, Austria, and India. More frequently, Radda is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัดดา | Thailand |
| Radda | Thailand, Ethiopia, India, Democratic Republic of the Congo, Austria |
| رادا | Iran, Jordan, Iraq, Palestinian Territory |
| antonio fineschi da radda FR (b. 1634) |
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| karl radda PL (b. 1844) |
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radda györgy károly Hungarian chemist, Chairman of Biomedical Research Council, Singapore and former head of UK Medical Research Council, HU (b. 1936) |
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| julie florent radda French artist, FR (b. 1891) |
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| lydia radda (b. 1891) |
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| alfred radda Austrian ichthyologist, AT (b. 1936) |
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| luise radda kohnert (b. 1937) |
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| thomas-michael radda Austrian university teacher, AT (b. 1951) |
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| radda novikova Russian film and television director (b. 1974) |
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| jonathan s d radda researcher |
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| adalbert radda |
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| carl radda |
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| umar dikko radda |
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