Worldwide, Zethy (Zethy 
) is a rare dominantly boy's, but infrequently female first name. The forename Zethy is habitual in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare boy's name, and Tanzania, where it is a very rare girly name. Very seldom, Zethy is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Zethy | South Africa, Mexico, Tanzania, Peru, Democratic Republic of the Congo |