- A&H Consultant Group, Inc.
 - Columbus - Specialises in Yellow Pages advertising. - Classic Events
- Columbus - Specialises in promoting and marketing Chrysler motorsports. Site offers event listings and information.
- Gerbig, Snell/Weisheimer & Associates, Inc. (GSW)
- Columbus
- Lord, Sullivan & Yoder, Inc.
- Columbus - Marketing communications including advertising, direct marketing, graphic design, interactive and online services, media planning and buying, public relations and strategic services.
- Marketing Works
- Worthington - Services include tailored, comprehensive marketing plans, Internet support, relationship enhancement, media relations, corporate campaigns, and sales support.
- Out of the Box Designs, Inc
- Columbus - Marketing firm specialises in integrating marketing, E-business applications, programming, and design services.
- Stratamar, Inc.
- Hilliard - Specialises in strategic and tactical marketing, developing marketing plans, product development, and more.
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