Family name سيفر (Cypher 
, سيفر 
, Siffre 
) , all over the world, is quite a rare last name. The last name سيفر is characteristic of Ghana, where it is quite a rare surname, Myanmar, and France, where it is a rare surname. In absolute terms, it is commonest in the United States, Ghana, and Myanmar. Very seldom, سيفر is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cypher | Germany, Ghana, France, United States, Myanmar |
| سيفر | Iraq, Morocco |
| Siffre | Germany, Nigeria, France, United States, United Kingdom |
| Seever | Germany, United States, Canada |