<p>Agency and communion are two core motivational themes in narrative identity, reflecting drives for independent control and relatedness, respectively. Despite significant attention to the salience of these narrative themes, no previous research has examined thematic change or associations with well-being and developmental outcomes in late midlife. In a diverse sample of 128 adults transitioning from middle to later adulthood, life story interviews were conducted at three time points (ages 55, 60, and 65, approximately). Five autobiographical scenes from each participant per wave were coded for agency and communion, for a total of 1,913 scenes. At the between-person level, adults who were highly generative and reported greater ego integrity at age 65 tended to tell life stories marked by fulfilled agency and communion. Higher levels of these themes across the three waves were also linked to greater well-being and life satisfaction at age 65. There was no significant within-person change in agency or communion across the three waves of this longitudinal study, and the small changes that did occur did not predict well-being or developmental outcomes assessed at age 65. Taken together, the findings suggest that fulfilled agency and communion function as enduring markers of narrative identity that significantly relate to adjustment in late midlife.</p>