Practical philosophers do not usually think of negotiating when developing moral theories; negotiators do not usually think of ethics when discussing their practice. However, ethics and negotiation are no strangers to each other. Four concepts of negotiation are distinguished: the warrior concept, the mercantile concept, the civil concept and the constructive concept. The last three concepts are charged with moral notions. These notions are made explicit. In ethics decisions are not simply deduced from moral principles. Moral decisions come about by deliberating principles, consequences, universal values and local values. In these deliberations people have similar and different interests. To reach an agreement they exchange views, explain their interests ant try to reach an agreement. Not every process of negotiating leads to morally defendable outcomes. For negotiating ethics a moral minimum is identified and a positive heuristic is developed.