Cognomen Rothlein (Rothlein 
) , throughout the world, is a rare last name. The cognomen Rothlein is characteristic of Northern America, particularly the United States, where it is a very rare surname, and Canada, where it is an extremely rare surname. Very seldom, Rothlein is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rothlein | United States, Spain, Canada |
| arlene rothlein American actress and dancer (1939-1976), US (b. 1939) |
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| william rothlein American actor, US (b. 1943) |
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| jerry rothlein college basketball player (1965–1965) |
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| david rothlein researcher |
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Ash, Steve, April, Carly, Craig, Barry, Bryan, Billy, Peter, Robin, Renee, David, Gaila, Laura, Lewis, Linda, Louis, Janet, James, Jason, Tobin, Nancy, Selma, Helen, Susan, Fred, Lee, Liz, Jay, Zoe, Mark, Matt, Anne, Adam, Rose, Dave, Gary, Gail, Gina, Leah, Lisa, Lois, Joan, Joel, Tami, Nick, Erin, Marla, and Ilene