Family name Isanzu (Isanzu 
) , all over the world, is a rare last name. The surname Isanzu is habitual in Tanzania, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Isanzu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isanzu | United Kingdom, Tanzania |