Family name Onselen (Onselen 
) , across the world, is a rare cognomen. The family name Onselen is characteristic of Lesotho, where it is quite a rare surname, Netherlands, where it is a rare surname, and South Africa.
| VARIANT | COUNTRY |
|---|---|
| Onselen | South Africa, Lesotho, Australia, Brazil, Netherlands |
| peter van onselen Australian academic and journalist, AU (b. 1976) |
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| belinda van onselen member of the National Assembly of South Africa |
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| julie van onselen |
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| gareth van onselen |
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Mr, Nick, Elsa, Earl, Fred, Zane, Maisa, Merel, Sonia, Aline, Anné, Annã, Carlo, Carla, Corne, Cecil, Bernd, Kelly, Keith, Kevin, Nico, Toby, Jean, Joke, Ms, Sam, Ana, Lee, L J, Jan, Van, Zoe, Corr, Paulo, Paul, Remy, Rick, Rudi, Deon, Daan, Gert, Leon, Jaco, John, Rosa, and Peter