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

Brand Vector Logos start with 'G' letter

Goosehead Insurance
GANT
Gruppo Pittini
Gopromotional
Grupo Corporativo Pérez
GirekStudio
GAZT
Grey Goose
Gran Patio Pachuca
Gelir Idaresi Baskanligi
Grand Muscovado Milling Corporation