Cognomen Deetlefs (Deetlefs 
) , in all the world, is quite a rare family name. The surname Deetlefs is characteristic of South Africa, where it is quite a rare surname, New Zealand, where it is a rare surname, and Australia. In absolute terms, it most frequently occurs in South Africa, Australia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Deetlefs | Australia, United States, New Zealand, United Kingdom, South Africa |
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deetlefs du toit retired South African politician residing in New Jersey, United States, ZA |
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| ian deetlefs South African general, ZA |
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| lisa-marie deetlefs Olympic field hockey player, ZA (b. 1987) |
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Mr, Rone, Rina, Ruan, Ryan, Dean, Deon, Dana, Dave, Dawn, Dion, Gary, Gail, Gert, Leon, Lida, Liam, Jaco, John, Joey, Jodi, Jean, Kylo, Kyle, Koos, Bees, Ms, Ken, Ray, Jan, Joe, Tom, Tim, Ina, Ian, Mari, Judi, Marc, Mimi, Sara, Sade, Sean, Sven, Anna, Anni, Ance, Adre, Chez, Mary, and Tana