Aage
- Alem
- Aage Bohr
- Abbe , Cleveland
- Abbe , Ernst
- Abegg , Richard
- Abel
- Abel , John Jacob
- Abel , Niels Henrik
- Abel , Sir Frederick Augustus
- Abelson , Philip Hauge
- Adams , John Couch
- Adams , Walter Sydney
- Adhemar
- Adhemar , Alphonse Joseph
- Adler , Alfred