Cognomen Steffek (Steffek 
) , in the world, is quite a rare family name. The last name Steffek is habitual in Slovakia, where it is quite a rare surname, Czechia, and Austria, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Germany, and Czechia. Very seldom, Steffek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Steffek | Germany, Czechia, Austria, United States, Slovakia |
| adolf steffek (b. 1850) |
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| hanny steffek Polish operatic soprano (1927- 2010), PL (b. 1927) |
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| micah steffek researcher |
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| micah steffek researcher (ORCID 0000-0002-8253-4983) |
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| jens steffek (b. 1972) |
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| felix steffek (b. 1975) |
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Mr, Cole, Cody, Brad, Bill, Karl, Keri, Kurt, Kyle, Paul, Poet, Phil, Rose, Rene, Reed, Rick, Ruth, Ryan, Dave, Dawn, Gary, Leon, Cory, Lisa, Carl, Abby, Ms, Ali, Ann, Amy, Bev, Kim, Pat, Pam, Dan, Jay, Joe, Jim, Tom, Wes, Mary, Mark, Maik, Mike, Sara, Alex, Anne, Adam, and Lori