Saiful is a given name. Notable people with the name include:
Saiful Apek (born 1969), famous comedian in Malaysia
Saiful Azam (born 1941), retired air force officer with the Pakistan Air Force
Saiful Haq, Bangladeshi architect, educator, architectural theorist and activist
Saiful Hoque, Bangladeshi diplomat, Ambassador of Bangladesh to Russia
Saiful Islam (cricketer, born 1969), former Bangladeshi cricketer
Saiful Islam (cricketer, born 1979), List A cricketer from Bangladesh
Saiful Islam (professor) FRSC, British materials chemist
Mohd Saiful Nizam Miswan (born 1981), Malaysian football player
Saiful Rijal, the eighth sultan of Brunei
Saiful Kamaluddin, Bruneian
Mohd Saiful Rusly (born 1978), Malaysian football player
Shaykh Mufti Saiful Islam Sahib, Islamic scholar
Saiful Amar Sudar, Malaysian footballer
Saiful Bari Titu, football coach and former football player from Bangladesh