Roos Vonk is a Dutch professor of social psychology at the Radboud University of Nijmegen. She studied at Leiden University, received her PhD in 1990, and became professor at Nijmegen University in 1999.

Actively popularizing psychology, she writes books on the subject for both the general and the academic audience, and also gives lectures, management training, and writes columns (for instance, in Psychologie Magazine and Intermediair).

Roos Vonk has published articles and books on flattering, vulnerable egos, first impressions, flirting, intimate relationships, power and leadership, self-image and self-knowledge. She's also done research on overconfidence, emotional incontinence, and ways for self-improvement.