Cognomen Сайдам (Saydam 
, Сайдам 
) , across the world, is a common family name. The surname Сайдам is characteristic of Turkey, where it is quite a common surname, United Arab Emirates, where it is a rare surname, and Switzerland. In absolute terms, it is commonest in Turkey, Germany, and the United States. Very seldom, Сайдам is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saydam | Turkey, Germany, Poland, United States, India |
| Сайдам | Kyrgyzstan, Kazakhstan, Russia, Ukraine |