The Wendy's International, Inc. The Wendy's International, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Restaurants, Food & Beverages >> Restaurants - Full Service The Wendy's International, Inc. One Dave Thomas BoulevardDublin, OH 43017 | map | directions (614) 764-3100 | fax: (614) 764-3256 Visit Site World's third largest quick-service hamburger company. 6,000 locations. Member Since: 2012 Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.