[Abstract]: Many researchers have noted that bereavement is a major stress factor associated with the etiopathogeny of psychological disorders among immigrants, but until now, the grief reactions of these ethnic minorities have not been analyzed. This study aims to examine the impact of the migration trajectory (immigration status and duration) as well as the use of ritual support to cope with grief reactions in the context of migration. Fifty-four migrants and 20 refugees (N = 74) in France and Belgium were surveyed regarding their experience of mourning a family member. The results showed that complicated grief is associated with the status and duration of immigration. A majority of refugees reported a deterioration of their social life when the duration of their immigration exceeded 10 years. Feeling guilty, dazed or stunned, loneliness, bitterness, numbness, and emptiness made up the spectrum of severe and persistent guilt reactions. Those who took part in bereavement rituals suffered less from feelings of guilt and despondency. Eldest siblings presented a very high rate of complicated grief. These findings were discussed using a psycho-cultural approach; they demonstrated that in the context of migration, grief reactions develop around the principle of debt, based on the parent-child relationship inextricably associated with a feeling of belonging to the ethnic group and collective memory.