Moral theory has generally focused on resolving ethical dilemmas by identifying ethically sound options. Whether the focus is on consequences, duties, principles or virtues, ethical cases are often approached in ways that assume morally sound solutions can be found and followed. Such ‘ideal morality’ assumes that moral goodness is always possible, leaving people confident they have done the right thing. Such an approach becomes inadequate in disaster settings where any good solution is often difficult to see. This paper examines recent (...) work on nonideal moral theory as a useful model for disaster bioethics. This approach views moral dilemmas as situations where no choice is ideal and every option involves some element of unavoidable wrongdoing. Rather than straining for ideal answers, this approach acknowledges that sometimes the lesser of two evils is the best that can be done. Such situations inevitably lead to feelings of regret or guilt, commonly encountered in discussions of disaster bioethics. This paper explores the practical implications of nonideal approaches for disaster responders working in tragic situations. (shrink)