Cognomen Grewer (Grewer 
) , across the world, is a rare last name. The surname Grewer is habitual in Germany, where it is a rare surname, the United Kingdom, and Netherlands, where it is a very rare surname. In absolute terms, the name is most common in Germany, the United Kingdom, and the United States. Much less frequently, Grewer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Grewer | Germany, United Kingdom, France, Netherlands, United States |
| augustus grewer DE (b. 1700) |
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| jimmy grewer Scottish footballer (1865-1950), GB (b. 1865) |
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| willi grewer German association football player (1932-1957), DE (b. 1932) |
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| hermann grewer DE (b. 1943) |
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| christof grewer researcher (ORCID 0000-0002-8342-9878) |
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| j.j. grewer |
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Mr, Nick, Neil, Hans, Olaf, Madge, Megan, Sandy, Sarah, Susan, Till, Alexa, Chuck, Codie, Bernd, Bryan, Kelli, Klaus, Peter, Royce, Debra, Amber, Jens, Joop, John, Ms, Mel, Sam, Sue, Amy, Kim, Jay, Jon, Tom, Tim, Ian, Mark, Sara, Alex, Adam, Katy, Paul, Dale, Dirk, Gary, Jack, David, and Laura