Alf Rehn (born 1972) is a Finnish professor, author and speaker based in Denmark.

Rehn works as a columnist, and sits on the board of directors for several companies, including Veikkaus.

[4] Currently, he is a professor of innovation, design, and management at SDU-the University of Southern Denmark.

[1] Rehn frequently keynotes corporate and other events,[5][6] including TEDx-events[7] and Ciudad de las Ideas.

[13] In 2019, Rehn published a book Innovation for the Fatigued: how to build a culture of deep creativity.