Family name Kleinbaum (Kleinbaum 
) , around the world, is a rare surname. The cognomen Kleinbaum is habitual in Israel, where it is a rare surname, New Zealand, and the United States, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in the United States, Israel, and France.
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| Kleinbaum | Germany, Mexico, United States, France, Israel |
| jack i. kleinbaum American businessman and politician, US (b. 1917) |
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| david g. kleinbaum researcher, US (b. 1941) |
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| abby wettan kleinbaum American historian, US (b. 1943) |
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| nancy h. kleinbaum American journalist, US (b. 1948) |
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| sharon kleinbaum American rabbi, US (b. 1959) |
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| ricardo kleinbaum Mexican actor and television actor, MX (b. 1976) |
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| andre kleinbaum osteopath in New Zealand |
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| adam m kleinbaum researcher ORCID ID = 0000-0003-3654-2154 |
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| jeff kleinbaum college basketball player (1973–1976) Rutgers |
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Sam, Eric, Eran, Hugo, Faye, Oren, Oded, Yair, Zach, Marla, Sarah, Sheri, Scott, Annie, Anita, Adela, Adele, Aaron, Aviva, Carol, Barry, Bobby, Edna, Katie, Toby, Joel, Ben, Bob, Rob, Dan, Jen, Mary, Mark, Sara, Seth, Anne, Abby, Adam, Cody, Kate, Paul, Rose, Greg, Lori, Jake, Josh, John, Jeff, and Ruben