Last name Riedt (Riedt 
) , globally, is a rare cognomen. The cognomen Riedt is habitual in Germany, where it is a rare surname, South Africa, where it is a very rare surname, and Croatia. Not in comparison with a country's population, the name is most common in Germany, South Africa, and the United States.
| VARIANT | COUNTRY |
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| Riedt | France, United States, Germany, Croatia, South Africa |
| friedrich wilhelm riedt German composer, DE (b. 1710) |
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| heinz riedt German translator, DE (b. 1919) |
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| kirsten riedt German writer, DE (b. 1964) |
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| jan van riedt Roman Catholic bishop |
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| dr. karl christian senff gen. von riedt |
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