There are few studies of the migration context factors and physical activity (PA) level among minority ethnic women in Europe. We investigated the association between migration context factors and moderate to vigorous physical activity (MVPA) among minority ethnic women. Objectively recorded MVPA were obtained from 487 minority ethnic women included in the STORK-Groruddalen Cohort Study at three time points in pregnancy/postpartum. We investigated the associations between (a) contact with ethnic Norwegians and (b) Norwegian language skills and. No associations were observed in pregnancy. Postpartum, women who reported contact with ethnic Norwegians accumulated 17 MVPA min/day (95% CI: -.60, 34.54) more than women with no contact. In complete case analyses, this difference was significant (27 MVPA min/day (95% CI: 8.60, 44.54)). In early postpartum women with contact with ethnic Norwegians seems to be more physically active than women without contact. No associations were observed in pregnancy.