Cognomen Saifullah (Saifullah 
, Сайфуллах 
, Саифуллах ) , across the world, is a common last name. The family name Saifullah is habitual in Bangladesh, where it is quite a common surname, Brunei, where it is quite a rare surname, and United Arab Emirates. In absolute terms, it most frequently occurs in Bangladesh, Indonesia, and Pakistan. Likewise, Saifullah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saifullah | Indonesia, Saudi Arabia, Malaysia, India, Bangladesh |
| Сайфуллах | Kazakhstan, Russia, Ukraine |
| Саифуллах | Russia |
Saıfullah, Сайфуллагь, and Сайфуллахь
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k. m. saifullah Indian politician, IN (b. 1944) |
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| muhammad saifullah Minister for Religious Affairs, PK (b. 1930) |
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| zafar saifullah Indian civil servant, IN (b. 1936) |
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| kulsoom noor saifullah Indian businessperson (born 1956, child of Inder Sethi), IN (b. 1956) |
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| osman saifullah politician (b. 1972) |
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| mohammad s m saifullah researcher (ORCID 0000-0002-3172-041X) |
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| salim saifullah researcher |
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| s.m. saifullah botanist |
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| muhammad saifullah politician in Pakistan |
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| m saifullah Indonesian politician (born 1981 in Medan), ID (b. 1981) |
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| gambit saifullah Malaysian actor, MY (b. 1985) |
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