Surname Silvance (Silvance 
) , in the world, is a very rare last name. The last name Silvance is habitual in Sub-Saharan Africa, particularly Tanzania, where it is a very rare surname. Much more frequently, Silvance is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Silvance | United Kingdom, Saudi Arabia, Kenya, United States, Tanzania |