This research investigated the mediator role of mindfulness on the relationship between friendship quality and subjective vitality. Participants were 273 university students (M age=21 years, SD=1.1) who completed a questionnaire package that included the Friendship Quality Scale, the Cognitive and Affective Mindfulness Scale, and the Subjective Vitality Scale. Both mindfulness and subjective vitality were correlated positively with friendship quality and subjective vitality was correlated positively with mindfulness. Mindfulness mediated the relationship between friendship quality and subjective vitality. Together, the findings illuminate the importance of friendship quality in psychological and cognitive adjustment.