- Ahmet Mithat, 1844-19121
- Ahoms (Indic people)1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)1
- Akif Paşa, 1787-18451
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Alberto, Alberto di2
- Albigenses1
- Albizzi family1
- Albizzi, Costanza1
- Alchemy6
- Aldobrandini, Giovanni degli1
- Aleramo, Marquis of Monferrato, -9671
- Alessandri, Alessandro degli1
- Alessandri, Bartolomeo degli2
- Alessandri, Niccolò degli1
- Alessandri, Piero degli9
- Alessandri, Pietro degli2
- Alessandro, Pietro di1
- Alexander Balas, King of Syria, -145 B.C.1
- Alexander III, Pope, -11811