Cognomen Krummenacker (Krummenacker 
) , across the world, is a rare family name. The last name Krummenacker is habitual in France, where it is a rare surname, Estonia, and Germany, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in France, the United States, and Germany. Very seldom, Krummenacker is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Krummenacker | Germany, Brazil, Estonia, United States, France |
| dieter karl krummenacker CH (b. 1938) |
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| david krummenacker American middle distance runner, US (b. 1975) |
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| markus krummenacker (b. 1967) |
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| markus krummenacker researcher (ORCID 0000-0002-2546-3007) |
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Mr, Hugo, Maria, Marie, Sarah, Shari, Selim, Alain, Allan, Colin, Emma, Celio, Brice, Brett, Karen, Karyn, Kevin, Denis, David, Dylan, Laura, Brian, Erin, Theo, Jean, Ms, Bob, Ken, Kim, Guy, Joe, Jim, Mari, Mary, Mark, Mike, Aida, Carl, Kurt, Paul, Drew, Greg, Lois, Léa, Jane, John, Larry, and Linda