Migrant parents experience both acculturation-related stressors and common parenting challenges. Although mindfulness benefits parental mental health and parenting, the mechanisms underlying these relationships in migrant contexts remain unclear. This study investigated whether cross-cultural adjustment processes (i.e. bicultural identity integration and sociocultural adaptation) mediate associations between dispositional mindfulness and parenting outcomes among migrant parents. A cross-sectional study was conducted with 119 parents from Mainland China who had lived in Hong Kong for less than seven years (mean age = 39.27 years, 95 percent mothers). Participants completed validated measures of mindfulness, bicultural identity integration, sociocultural adaptation, mindful parenting, parenting stress, and psychological distress. Mediation analyses with bootstrapping procedures (5,000 resamples) showed that mindfulness was positively associated with mindful parenting and negatively associated with parenting stress and psychological distress. Mindfulness also predicted higher levels of bicultural identity integration and sociocultural adaptation. Bicultural identity integration mediated the relationships between mindfulness and all parental outcomes, while sociocultural adaptation mediated the relationships between mindfulness and both mindful parenting and parenting stress. These findings suggest that cross-cultural adjustment processes are distinct pathways linking mindfulness and parental outcomes, supporting the integration of mindfulness in community services for migrant parents.