Ibn al-Haytham (Latinized "Alhazen") was an 11th-century Arab mathematician and astronomer.
Alhazen or Alhaitham may also refer to: Alhazen (crater), a lunar crater 59239 Alhazen, an asteroid Alhaitham (Genshin Impact), a character from the 2020 video game Genshin Impact
See also Alhazen's problem Haitham