Personality dynamics have recently revived interest as a subject of systematic investigation in personality science. Personality dynamics theories and research refer to nonstatic phenomena related to personality, such as the regulatory mechanisms and processes involved in the control of behavior and experience related to personality and their interactions with situations. Such research is not only important to understand personality but also important to explain the large amount of variability in behavior and experience in an individual that can hardly be explained by a few personality traits. This introduction to a special issue of the Journal of Personality outlines the contributions of 11 articles tackling four emerging trends in the field: (1) personality dynamics and levels of regulation; (2) personality dynamics and the motivational dimension of regulation; (3) dynamics and regulatory potentials of structural personality components; and (4) personality dynamics and timescales. Moreover, we add recommendations for future exploration. Together, we believe that our special issue advances personality science in conceptualizing and examining personality dynamics as well as drawing attention to unanswered issues.