VADC stands for Volunteer Aide-de-Camp (US Civil War officer duty)
VADC stands for Valsts Asins Donoru Centrs (Latvian: National Blood Donor Center; Riga, Latvia)
VADC stands for Veteran Agility Dog of Canada (Agility Association of Canada)
VADC stands for Visual Arts and Design Center (various locations)
VADC stands for Venice Area Democratic Club (Venice, FL)