The philosophical ethics deals with related issues to the meaning of the speech and moral practices, the criterion of right and wrong, good and bad and applications of this in solving problems. Utilitarianism is an ethical theory which helps us to solve moral problems, by means of the calculation of utilities that involve action, rules and moral institutions. Therefore, it is important to analyze the referred theory as way of knowing if there are good reasons to accept the recommendations that it offers, regarding the resolution of moral problems. In this work, we intend to analyze the ethical theory named Utilitarianism. It will be explained its main characteristics in detail, such as the consequentialism and the welfarism, and how...