Background: There is a growing need to support the health and wellbeing of older persons aging in the context of migration.Objectives: We evaluated whether a group-based health promotion program with person-centred approach, maintained or improved life satisfaction and engagement in activities of older immigrants in Sweden.Methods: A randomised controlled trial with post-intervention follow-ups at 6 months and 1 year was conducted with 131 older independently living persons aged =70 years from Finland and the Balkan Peninsula. Participants were randomly allocated to an intervention group (4 weeks of group intervention and a follow-up home visit) and a control group (no intervention). Outcome measures were life satisfaction and engagement in activities. Chi-square and odds ratios were calculated.Results: The odds ratios for maintenance or improvement of life satisfaction (for social contact and psychological health) were higher in the person-centred intervention group. More participants in the intervention group maintained or improved their general participation in activities compared with the control group. However, no significant between-group differences were found.Conclusion: Person-centred interventions can support older person's capability to maintain their health in daily life when aging in migration. Further research is needed with a larger sample and longer intervention period to determine the effectiveness of the intervention.