Namesakes
Islamic Caliphs:
2 caliphs
Caliph Abdullah al-Mansur (a.k.a. Abdallah) 754-775 Abbasid 
Caliph Abdullah al-Mustakfi (a.k.a. Abdallah) 944-946 Abbasid
Jordanian Prime Ministers:
1 prime minister
Abd Allah Siraj 1931-1933
Other Leaders:
2 prime ministers, 1 president
Prime Minister Abdallah Beyhum 1939-1941 Lebanon
Prime Minister Abdallah El-Yafi 1938-1939; 1951-1952; 1952; 1953; 1956-1958; 1966; 1968-1969 Lebanon
President Fouad Chehab (a.k.a. 'Abd Allah) 1958-1964 Lebanon