Stephen Kosslyn is an American psychologist, neuroscientist, and expert on the science of learning.

Kosslyn is president of Active Learning Sciences, Inc., which helps institutions design active-learning based courses and educational programs. He is also founder and chief academic officer of Foundry College, an online two-year college designed to help working adults develop skills and knowledge that will not be automated in the foreseeable future.

Prior to that, Kosslyn was Dean of Social Sciences at Harvard University.