Kazasker Mustafa Izzet Efendi (Ottoman Turkish: کازاسکر مصطفی عزت افندی, Modern Turkish: Kazasker Mustafa Izzet Efendi) (alternative: Kadiasker Mustafa Izzet Efendi, Seyyid Mustafa) (b. 1801 Tosya – d. 16 November 1876 Istanbul), was an Ottoman composer, neyzen, poet and statesman best known for his calligraphy.[1][2]