Over here you will find free vector brand logos in Illustrator, EPS, Corel Draw format..

Brand Vector Logos start with 'A' letter

Alta Windows
AVS
Angus Rojo
Aon Empower Results
Ashirvad by aliaxis
Anadolu Saglik Turizm Dernegi
Avigrupo
Alhandra
AMA
AD Delhaize
Andre The Giant