Surname זידר (Zaider 
, זידר 
) , all around the world, is a very rare family name. The last name זידר is habitual in Israel, where it is a rare surname, Venezuela, where it is a very rare surname, and Colombia. Measured by absolute frequency, it is the most numerous in Israel, Brazil, and Colombia. Also, זידר is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zaider | Philippines, South Africa, United States, Brazil, Colombia |
| זידר | Israel |