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 | Saudi Arabia, India, Bangladesh, Pakistan, Somalia |
| Sheik | Kenya, Saudi Arabia, Bangladesh, United Arab Emirates, Somalia |
| Cheikh | Mauritania, Saudi Arabia, India, United Arab Emirates, Egypt |
| Шейх | Russia, Kyrgyzstan, Belarus |