Samiullah Khan or Samiulla Khan or Sami Ullah Khan can refer to:
Samiullah Khan, governor of the princely state of Sahaspur in India Samiullah Khan (cricketer), Pakistani international cricketer Samiullah Khan (field hockey), Pakistani field hockey player Samiullah Khan (politician), Pakistani politician Samiulla Khan, former Indian politician Sami Ullah Khan, Pakistani politician