Surname Шейх (Sheikh 
, Sheik 
, Cheikh 
) , in the entire world, is a widespread cognomen. The cognomen Шейх is habitual in United Arab Emirates, where it is a common surname, Somalia, and Mauritania (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Southern Asia, particularly India, Pakistan, and Bangladesh. Also, Шейх is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sheikh | Somalia, Saudi Arabia, India, Pakistan, Bangladesh |
| Sheik | Somalia, Saudi Arabia, United Arab Emirates, Kenya, Bangladesh |
| Cheikh | Saudi Arabia, United Arab Emirates, Egypt, Mauritania, India |
| Шейх | Kyrgyzstan, Russia, Belarus |