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

Brand Vector Logos start with 'I' letter

International Credit Brokers Alliance
Il Chiosco dell'Elica
Ingenieria con Pasión
iPhone 7
ICAP
Impulse Corporate
Ibadah
Intelsat
Intikilla
IWA
Indio Solari