Anthon Royce A.
Anthony F. Altamira
Anthony J. David
Antoine Andrew
Anton Zahradnik
Antonio Ugueto Gustavo
Antonova Roza I.
Antonsen Roger
Anttila Antero
Anttonen Pekka
Antweil Barry L.
Anxionnaz Herve
Anyan Steven L.
Aokata Takashi
Apache Corporation
Aparecida de Melo Maria
Apex Oilfield Services (2000) Inc.
Apostal Michael
Appel Cornelis
Appledorn Roger C.