class MyAdmin(admin.ModelAdmin): def get_form(self, request, obj=None, **kwargs): form = super(MyAdmin,self).get_form(self,request, obj,**kwargs) # form class is created per request by modelform_factory function # so it's safe to modify #we modify the the queryset form.base_fields['foreign_key_field].queryset = form.base_fields['foreign_key_field].queryset.filter(user=request.user) return form