Hassan-e Sabbāh (1050s–1124) is a Persian Nizārī missionary who converts a community in the late 11th century in the heart of the Alborz Mountains of northern Iran.

The place is called Alamut and is attributed to an ancient king of Daylam.

He founds a group whose members are sometimes referred to as the Hashshashin or Assassins to protect from attackers outside of Iran.