British and Irish History: Biographies
- Abraham Darby
- Abu Bakr Muhammad Ibn Zakariyya Al-Razi
- AElle
- AEthelbald
- AEthelbert (560-616)
- AEthelred
- Aethelwulf
- Alan Francis Brooke 1st Viscount Alanbrooke
- Albert (Great Britain)
- Albert Reynolds
- Alexander Frederick Douglas-Home Baron Home of the Hirsel
- Alexander II (Scotland)
- Alexander III (Scotland)
- Alexander Leslie
- Alexander Monro
- Alexandra
- Alfred
- Alfred (the Great)
- Alfred Moritz Mond 1st Baron Melchett
- Algernon Sidney