Surname Baier (贝尔 
, Baier 
, باير 
, along with others...) , globally, is a common cognomen. The family name Baier is characteristic of Western Europe, particularly Germany, where it is quite a common surname, Austria, and Switzerland. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Austria. Very seldom, Baier is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 贝尔, 拜尔 | China |
| Baier | Austria, Germany, Argentina, Brazil, United States |
| باير | Iran, Iraq, Jordan, Palestinian Territory, Syria |
| Байер | Kazakhstan, Ukraine, Russia, Kyrgyzstan |
| jodocus justus baier DE (b. 1520) |
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| jonas baier DE (b. 1585) |
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johann wilhelm baier German theologian (1647-1695), DE (b. 1647) |
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johann wilhelm baier German mathematician, physicist and theologian, DE (b. 1675) |
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johann jakob baier German naturalist, DE (b. 1677) |
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ferdinand jakob baier German physician (1707-1788), DE (b. 1707) |
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| johann david baier DE (b. 1681) |
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| johann christoph baier (b. 1684) |
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| johann jakob baier DE (b. 1724) |
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| joaquim català i baier ES (b. 1744) |
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alwill baier German theologian, DE (b. 1811) |
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rudolf baier German author (1818-1907), DE (b. 1818) |
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bonaventura baier DE (b. 1818) |
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| alwine baier (b. 1787) |
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| franz baier DE (b. 1795) |
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