The acquisition follows a long relationship between the two companies, with ID Consultores having operated as a licensee of the global brand, communications and media giant since 1995.
ID Consultores offers a wide range of qualitative and quantitative services for clients throughout Argentina, Uruguay and Paraguay.
Fabian Hernandez, chief executive at Millward Brown Latin America, said: "This acquisition comes after a very successful relationship with ID Consultores, which has lasted for over a decade. By having ID Consultores become fully part of Millward Brown, clients will be able to continue benefiting from our innovative solutions, deep knowledge of brands, media and communications, and our leading-edge thinking on the major issues facing marketers today."
The company's new Argentinian office will be led by the existing head of ID Consultores, Julio Fresno Aparicio, who is also vice-president of the Argentinean Chamber of Market Research Companies.
Aparicio said: "After working together so well for so long, I am truly delighted that ID Consultores is now fully part of Millward Brown. The move will give us access to new tools and allow us to continue delivering world class solutions and new thinking to our clients. For our people, it means they now have even greater scope to develop their careers."
Millward Brown, one of the world's top 10 marketing research organisations, now has more than 76 offices in 44 countries.
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