Top 5 Marketing Research Companies in the World

1. Nielsen Holdings: Nielsen Holdings is one of the leading marketing research companies in the world, providing insights and data on consumer behavior and media usage. With operations in over 100 countries, Nielsen offers a wide range of services such as retail measurement, audience measurement, and advertising effectiveness.

2. Kantar: Kantar is a global market research company that specializes in understanding consumer behavior and helping businesses make informed decisions. Their services include brand and consumer research, media planning, and customer satisfaction studies. Kantar operates in more than 80 countries.

3. Ipsos: Ipsos is a multinational market research and consulting firm headquartered in France. They offer a wide range of research services including market and opinion research, advertising research, and customer satisfaction surveys. With offices in over 90 countries, Ipsos has a strong global presence.

4. GfK: GfK is a German market research company that provides valuable insights into consumer trends and market opportunities. They offer services such as consumer panel research, retail tracking, and media measurement. GfK operates in more than 100 countries.

5. Information Resources Inc. (IRI): IRI is a leading provider of big data and predictive analytics for consumer, retail, and media companies. They help businesses understand market trends, optimize pricing strategies, and improve sales and marketing effectiveness. IRI operates in more than 95 countries.