Family name Piitjo (Piitjo 
) , in the entire world, is a very rare cognomen. The last name Piitjo is habitual in Sub-Saharan Africa, particularly South Africa, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Piitjo | South Africa |
Mochidi, Tshwanelo, and Ngwanaboshego