- Arnold (Arnie) Greenland
- Arnold Greenfield
- Arnold I. Barnett
- Arnold Maltz
- Arnold Reisman
- Arnoud V. den Boer
- Arpan Rijal
- Arpit Agrawal
- Arseniy Gorbushin
- Artem Timoshenko
- Arthur A. Brown
- Arthur C. Hsu
- Arthur Delarue
- Arthur F. Veinott, Jr.
- Arthur Hong
- Arthur M. Geoffrion
- Arthur T. Benjamin
- Arturo Crespo
- Arturo Estrada Rodriguez
- Arturo Palacios Brun
