Abstract Background Vaccination coverage in Ukrainian migrants’ (UM) children is lower compared to their Polish counterparts. We aimed to identify and adapt effective evidence-based interventions which would address health system barriers to HPV/MMR vaccination in this community. Methods With the help of the Participatory Action Research (PAR) approach, 4 researchers, 6 experts, 6 UM, 7 Ukrainian GPs and 3 teachers identified and discussed transferability of promising HPV/MMR vaccination interventions and their adaptation from the Polish and contextual perspective. The Population-Intervention-Environment-Transfer Model of Transferability (PIET-T) model was used to accompany the steps for determining transferability. Results Three intervention elements were considered as capable for increasing HPV/MMR vaccination uptake: a health promoter, group educational sessions and an online provider training. Adaptations were needed to make them consistent with the contextual needs. The intervention was adapted to involve Ukrainian GPs delivering culturally sensitive education and a Ukrainian coordinator offering navigation support; barriers (lack of information/language barrier) were addressed. The education sessions for parents were taken into account as having potential to increase knowledge and facilitate making informed decisions regarding vaccination. The online education course was assessed as a strategy to possibly enhance GPs knowledge to let them make strong HPV/MMR vaccine recommendations to UMs. Conclusions Both, community-based PAR approach, and the PIET-T model, facilitated the assessment of intervention transferability and adaptation in terms of covering the individual context, pattern and needs of UMs community in Poland, to finally increase HPV/MMR vaccination uptake.