Cognomen Heckl (Heckl 
) , in the entire world, is quite a rare last name. The surname Heckl is characteristic of Malta, where it is quite a rare surname, Germany, and Austria. In absolute terms, this name is the most popular in Germany, Austria, and the United States.
| VARIANT | COUNTRY |
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| Heckl | Germany, Czechia, Austria, Hungary, United States |
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wolfgang m. heckl German physicist, DE (b. 1958) |
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| rudolf heckl AT (b. 1900) |
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| korbinian heckl (b. 1902) |
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karsten s. heckl U.S. Marine Corps general, US (b. 1964) |
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| ernst heckl CZ (b. 1914) |
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| karl heckl DE (b. 1927) |
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| manfred heckl DE (b. 1930) |
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| frank heckl American swimmer, Pan American Games gold medalist, former world record-holder, US (b. 1950) |
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| jens heckl German historian and archivist, DE (b. 1967) |
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| peter heckl (b. 1965) |
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| raik heckl DE (b. 1967) |
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| christian heckl researcher (ORCID 0000-0002-7418-7176) |
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| leonhard heckl Abbot of the Benedictine Abbey Plankstetten |
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| marlene heckl researcher |
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| oliver h heckl researcher ORCID ID = 0000-0003-2879-1564 |
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Mr, John, Todd, Timo, Eric, Erik, Emma, Hans, Inge, Ingo, Otto, Yona, Marco, Sarah, Simon, Angie, Anton, Armin, Adina, Adolf, Chris, Bernd, Jack, Brian, Luis, Lisa, Ms, Max, Per, Don, Jim, Tim, Eva, Mark, Mike, Alex, Andy, Anna, Karl, Kurt, Raik, Rose, Ryan, Dirk, Gabi, Gina, Lena, Lora, and Bruno