Surname Williams-Pretorius (Williams-Pretorius 
) , around the globe, is an extremely rare cognomen. The surname Williams-Pretorius is habitual in Sub-Saharan Africa, particularly South Africa, where it is an extremely rare surname. Parts of the name also exists independently as a last name Williams, and a last name Pretorius.
| VARIANT | COUNTRY |
|---|---|
| Williams-Pretorius | South Africa |