Last name Радонежский (Радонежский 
, Radonezhskii) , all over the world, is a very rare cognomen. The family name Радонежский is habitual in Eastern Europe, particularly Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Радонежский | Russia |
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сергий радонежский Russian saint, RU (b. 1314) |
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никон радонежский Russian monk, RU (b. 1352) |
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| дионисий радонежский RU (b. 1570) |
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радонежский, платон анемподистович RU (b. 1826) |
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