Cognomen Fanslau (Fanslau 
) , globally, is a rare family name. The family name Fanslau is characteristic of Germany, where it is a rare surname, Poland, and the United States, where it is a very rare surname. Much less frequently, Fanslau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fanslau | Germany, United States, Poland, Canada, Brazil |
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karol fanslau lieutenant colonel of Polish Army, PL (b. 1895) |
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heinz fanslau German SS leader and convict at the Nuremberg Trials (1909-1987), DE (b. 1909) |
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| herbert fanslau brother of Heinz Fanslau; Nuremberg Trial affiant, DE (b. 1903) |
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| manfred fanslau (b. 1929) |
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