Family name Sayfullah (Sayfullah 
, Саыфуллах 
) , throughout the world, is a rare cognomen. The surname Sayfullah is habitual in Bangladesh, where it is a rare surname, Indonesia, where it is a very rare surname, and Germany, where it is an extremely rare surname. Also, Sayfullah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayfullah | Bangladesh, India, Indonesia, Saudi Arabia, Turkey |
| Саыфуллах | Russia |