- Blue Book Directory
 - Reference source provided by Market Research Association for business professionals who purchase consumer and opinion research services. - D-Source
- Research providers and advertising, consultants, created by marketing executives for marketing professionals.
- GreenBook Marketing Research Directory
- Online directory of marketing research companies and focus group facilities.
- Research Sources
- Directory of sources for free and paid market research information including country data, statistical sources, sector reports, published researches, back data, and market research companies.
- ResearchBuy
- Users can find the market research they need in the format they desire from all over the world. Offers categorized research, including financial services, health care, media, telecommunications and wireless, and food and beverage.
- Technometrica, Inc
- Specialising in turnkey research services, publishers of Marketing Research World and Directory of Marketing Research Companies.
- Zarden's Market Research Direct-A-Net
- Directory of market research and marketing research companies.
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