Benjamin Le is a social psychologist whose research focuses on interpersonal relationships. He has published on the topics of commitment in close relationships, relational cognition, breakup, emotions, social networks, geographic separation, social media, and research methodology. A second line of research examines commitment in non-romantic contexts, and his current work includes a collaborative longitudinal study of identity development among young adults.

Professor Le is originally from northern California and has been a member of the Department of Psychology at Haverford College since 2001, where he has taught courses on social psychology, close relationships, environmental psychology, intro/general psychology, science writing, and research methods/statistics. Prior to that he completed his undergraduate studies at Grinnell College and earned his doctorate at Purdue University. He has served on the editorial boards of the Journal of Social and Personal Relationships, the Journal of Personality and Social Psychology, and Personal Relationships, and has reviewed for all of the major publications in social psychology and relationship research. Prof. Le is a longstanding member of both the Society for Personality and Social Psychology (SPSP) and the International Association for Relationship Research (IARR), and recently became active in the Society for the Improvement of Psychological Science (SIPS).

In 2011 he co-founded, which won the 2012 Media Prize awarded by the Society for Personality and Social Psychology and to date (May 2018) has logged nearly 9 million page views.