About

Creativity and effectiveness

Double Loop Marketing™ has been at this work for two decades, for start-ups, Fortune 500 companies, universities and NGOs. Engagements are led by its founder, so what you see in the archive is the work of the person you talk to.

Christian Sarkar

Founder of Double Loop Marketing™. He co-authored the following books:

  • “Wicked Problems: What can we do in this Time of Collapse?” with Philip Kotler
  • “Regeneration: The Future of Community in a Permacrisis World” with Philip Kotler and Enrico Foglia
  • “Brand Activism: From Purpose to Action” with Philip Kotler
  • “Losing Our Democracy” with Philip Kotler
  • “Inclusivity: Will America Find Its Soul Again?” with Michael Gordon

In 2021 he was named to the Thinkers50 Radar of global management thinkers, primarily for the work on brand activism.

He is a co-founder of the Regenerative Marketing Institute, with Philip Kotler, and the primary author of Regeneration: The Future of Community in a Permacrisis World. In 2025 that work was recognised by Thinkers50 alongside the Institute.

He started the $300 House project with Dartmouth’s Vijay Govindarajan — their Harvard Business Review post was picked by the editors as one of the most intriguing of 2010 — co-authored Inclusivity: Will America Find Its Soul Again? with the University of Michigan’s Michael Gordon, and wrote “Why Making Money is Not Enough” for MIT Sloan Management Review with Ratan Tata, Stuart Hart and Aarti Sharma.

Christian Sarkar
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What clients say

“Christian Sarkar is a master at using online media to generate a strong return on marketing spend. He provides a rare combination of design for usability skills and clear understanding of the economic levers driving marketing performance. His unique approach to Double Loop Marketing™ builds upon the virtual community concepts I outlined in Net Gain. Christian brings proven experience in helping vendors cost-effectively find and convert prospects to customers... and then building in the feedback loops to rapidly improve performance over time.”
John Hagel III — co-chairman, Deloitte Center for the Edge; formerly global leader of McKinsey & Co.’s Strategy and Electronic Commerce practices
“Christian Sarkar constantly brings brilliance, creativity and a deep sense of integrity to everything we have done together. What more could you ask for?”
John Seely Brown — Chief of Confusion; formerly Chief Scientist, Xerox, and director of PARC
“Christian Sarkar’s unconventional techniques are based on sound marketing principles. Don’t be fooled by the apparent simplicity of his techniques; few people know online business as well as this...”
Raj Srivastava — provost, Singapore Management University; formerly Goizueta Business School, Emory University
“Christian is a source of great ideas. His enthusiasm is second only to his knowledge about how to get attention in the marketspace. If you need results, hire him ASAP.”
John Tammaro — former SVP, Masius, New York; former senior strategy manager, General Electric
“Christian’s uniqueness lies in his ability to bring fresh perspectives to familiar issues, to quickly identify and analyze emerging issues, and to distill the results into clear, concise observations. I have seen Christian apply these attributes in the broadest range of subjects, from market trends in the chemical industry to employee communications...”
John Gersuk — manager of public affairs, Bechtel Group

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