Surname Boelter (Boelter 
) , in the entire world, is quite a rare family name. The cognomen Boelter is characteristic of Germany, where it is a rare surname, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Boelter | Brazil, United States, Germany, Canada, Argentina |
| llewellyn michael kraus boelter American engineer (b. 1898) |
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| rudolf boelter auditor with the DEST, DE (b. 1903) |
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| gabriela boelter researcher (ORCID 0000-0002-1812-8681) |
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| mark boelter college basketball player (1994–1997) Pacific |
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| juliana f. boelter |
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