Arniks

Arta International Trading Company

Aslador Oil

Astal Karelsky

Atar

Atlant

Atmosphere

Aurora Navigator

Avantazh Resurs

Avianeft

Aviks Group

Avtogaz

Axmat

Azen Fuel Limited

Baikal

Balthimeco

Baltransnefte

Barents Gaz

Arsentech

Asik Oil

Asp-Petrol

Astarta

Atirau Oil and Gas Service

Atlantaenergy

Atoll Bpzh

Avalan

Avg Oil

Aviator Aviation Enterprise

Avivkhim

Avtol

Ayprommet

Azs-Rubikon

Bak-Service

Baltnefteprom

Bam-Oil

Bashexport