By Series - Dictionary of World Biography: The 19th Century
- Aaron Burr
- Abdelkader
- Abraham Lincoln
- Adolphe Thiers
- Albert A. Michelson
- Albert Bierstadt
- Albert Gallatin
- Albrecht Ritschl
- Aleksandr Borodin
- Aleksandr Herzen
- Aleksandr Stepanovich Popov
- Alessandro Manzoni
- Alexander and Demetrios Ypsilanti
- Alexander Campbell
- Alexander Graham Bell
- Alexander H. Stephens
- Alexander I
- Alexander II
- Alexander Pushkin
- Alexander von Humboldt
- Alexandre Dumas, père
- Alexis de Tocqueville
- Alfred Deakin
- Alfred Krupp
- Alfred Nobel
- Alfred, Lord Tennyson
- Alice Freeman Palmer
- Ambrose Bierce
- Amedeo Avogadro
- Andrew Carnegie
- Andrew Jackson
- Andrew Johnson
- Anna Howard Shaw
- Annie Besant
- Annie Oakley
- Anton Bruckner
- Anton Chekhov
- Antonio Canova
- Antonio José de Sucre
- Antonio López de Santa Anna
- Arthur Rimbaud
- Arthur Schopenhauer
- Asa Gray
- Aubrey Beardsley
- August von Gneisenau
- August Weismann
- Auguste Comte
- Auguste Rodin
- Augustus Saint-Gaudens
- Augustus Welby Northmore Pugin
