Family name Bădău (Bădău 
) , in the entire world, is a very rare cognomen. The last name Bădău is characteristic of Eastern Europe, particularly Romania, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Bădău | Romania |
| nicolae bădău icon and wall painter from Lupúa, Romania (b. 1790) |
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| adela bădău researcher (ORCID 0000-0002-1656-5060), RO |
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| dănuț bădău Romanian politician from Pucioasa, Dâmbovița County, RO |
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