Last name Jonæ (Jonæ 
) , in all the world, is a very rare cognomen. The family name Jonæ is characteristic of Northern Europe, particularly Sweden, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jonæ | Sweden |
| andreas jonæ hyltenius SE (b. 1598) |
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| olaus jonæ skough SE (b. 1604) |
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| ragvaldus jonæ steuchman SE (b. 1631) |
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| nicolaus jonæ ölander SE (b. 1638) |
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| daniel jonæ salin SE (b. 1706) |
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| jonas jonæ Swedish politician, SE |
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| gerhardus jonæ Swedish politician, SE |
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| petrus jonæ Swedish politician, SE |
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| jonas jonæ lille SE |
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| nicolaus jonæ SE |
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| alexander jonæ asping SE |
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