Family name Collatz (Collatz 
, קולץ 
) , all over the world, is a rare cognomen. The surname Collatz is characteristic of Denmark, where it is a rare surname, Germany, and South Africa. In absolute terms, this name is the most popular in Germany, the United States, and South Africa.
| VARIANT | COUNTRY |
|---|---|
| Collatz | United States, South Africa, Germany, Denmark, Spain |
| קולץ | Israel |
|
lothar collatz German mathematician, DE (b. 1910) |
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| otto collatz (b. 1863) |
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| klaus-günter collatz German zoologist, DE (b. 1942) |
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| maximilian collatz researcher |
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| jana collatz researcher |
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| george collatz researcher |
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| alex collatz American discus thrower, US (b. 1993) |
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Mr, Kori, Kyle, Paul, Ryan, Doug, Gary, Lene, Lisa, Jens, Judy, Esta, Emmy, Fred, Maria, Marie, Marta, Mirko, Sarah, Shaun, Simon, Susan, Anke, Steve, Anni, Anna, Ms, Ann, Lee, Lia, Jan, Jed, Jim, Tim, Tue, Ida, Wes, Udo, Uwe, Mary, Mark, Matt, Sean, Sven, Alex, Alan, Alta, Anne, and Scott