Around the world, Изяслав (Изяслав 
, Izyaslav 
, Iziaslav 
) is a rare boy's first name. The given name Изяслав is habitual in Israel, where it is a rare male name, Russia, and the United States, where it is an extremely rare primarily male, but scarcely female name. Much less frequently, Изяслав is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Изяслав | Kazakhstan, Russia, Ukraine |
| Izyaslav | United States, Israel |
| Iziaslav | Israel, Georgia |
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изяслав владимирович son of Vladimir I of Kiev and Rogneda of Polotsk, UA (b. 980) |
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изяслав i Grand Prince of Kyiv (1024-1078), RU (b. 1024) |
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изяслав мстиславич Grand Prince of Kyiv (1097-1154), RU (b. 1097) |
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изяслав давыдович Grand Prince of Kyiv, RU (b. 1100) |
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изяслав андреевич RU (b. 1148) |
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балясинский, изяслав генрихович RU (b. 1921) |
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кержнер, изяслав моисеевич Russian entomologist, RU (b. 1936) |
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| борисов, изяслав борисович RU (b. 1933) |
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| изяслав борисович пешков RU (b. 1936) |
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| изяслав владимирович -1096, RU |
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| изяслав владимирович RU |
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