Namesakes
Fictional Characters from Television:
1 character
Sayid Jarrah (a.k.a. Hassan) 2004 Lost 
Islamic Caliphs:
1 caliph
Caliph Hassan Al-Mustadi 1170-1180 Abbasid
Nobel Prize Winners:
1 chemistry
(chemistry) Ahmed Zewail (a.k.a. Hassan) 1999
Notable Athletes:
1 soccer
(soccer) Hassan Yebda 1984-
Notable Scientists and Inventors:
1 chemist
Ahmed Zewail (a.k.a. Hassan) 1946-2016
Other Leaders:
1 president, 1 prime minister
President Ali Hassan Mwinyi 1985-1995 Tanzania
Prime Minister Hassan Diab 2020-2021 Lebanon
Other Royalty:
1 prince
Hassan bin Talal 1947- Jordan