David Allen Aaker (born February 11, 1938) is an American organizational theorist, consultant and Professor Emeritus at the University of California, Berkeley's Haas School of Business, a specialist in marketing with a focus on brand strategy.

[2] He serves as Vice Chairman of the San Francisco-based growth consulting company Prophet.

Grether Professor Emeritus of Marketing Strategy at the Haas School of Business [4] and the currently the vice chairman of Prophet, a global brand and marketing consultancy firm, and an advisor to Dentsu, a Japanese advertising agency.

[citation needed] Aaker was inducted into the New York American Marketing Association's Hall of Fame in 2015.

[7] Aaker has won the award for "best article" in the California Management Review and in the Journal of Marketing (twice).