Utilitarianism is a theory in normative ethics holding that the best moral action is the one that maximizes utility.Utility is defined in various ways, but is usually related to the well-being of sentient entities.tilitarianism is a form of consequentialism, which states that the consequences of any action are the only standard of right and wrong. This view can be contrasted or combined with virtue ethics which holds virtue as a moral good. Some believe that one's intentions are also ethically important.