Namesakes
Islamic Caliphs:
1 caliph
Caliph 'Abbas al-Mu'tasim 833-842 Abbasid 
Notable Filmmakers:
1 director
Abbas Kiarostami 1940-2016
Notable Scientists and Inventors:
1 inventor
Abbas ibn Firnas c. 809-887
Persian and Iranian Kings and Queens:
3 kings
King Abbas I the Great 1588-1629
King Abbas II 1642-1666
King Abbas III 1732-1736