作者
- Ada Buisson
- Ada Cambridge
- Adah Isaacs Menken
- Adah Louise Sutton
- Adalbert Stifter
- Ada Leverson
- Adam Grant
- Adam J Jackson
- Adam Karrillon
- Adam Khoo
- Adam Lindsay Gordon
- Adam Mickiewicz
- Adam Oehlenschläger
- Ada M. Skinner
- Adam Smith
- Adam Walker
- Ada Negri
- Ada Russell
- Adelaide Anne Procter
- Adelaide Crapsey
- Adelbert von Chamisso
- Adele Garrison
- Adelia B. Beard
- Adelia Belle Beard and Lina Beard
- Adin Ballou
- Adi Shankara
- Adolf Dygasiński
- Adolf Lazarus
- Adolph de Castro
- Adolphus Ward
- Adolphus W. Greely
- Adriaan Loosjes Pzn.
- Adrian C. Anson
- Adrian Gostick
- Advisory Committee on Human Radiation Experiments
- A. E. C. Brooks
- A. E. Coppard
- A. Edward Newton
- A. E. Housman
- Ælfric of Eynsham