This article on the relationship between bioethics and ecumenism seeks to understand whether it is possible a bioethics in ecumenism beyond the different ecclesial hermeneutics. Presents two hermeneutics of bioethics, 'Protestant' and Catholic. Shows that the differences between the two bioethics are antropologhical. It therefore asks where you can find the foundation which puts in units these two anthropological hermeneutics. This foundation is the redemptive event. This event relativizes the oppositions between the two anthropologies and proposes an ecumenical anthropology, which is the basis of a ecumenical bioethics in situation essentially christic. The redemptive event is also the ultimate foundation of the norm of bioethics in Christian ecumenical sense in respect of the first principle of bioethics that is the beginning of human life, from conception to natural death.