The present work is a Master Thesis in Law about the prohibition of the genetic discrimination in the light of the Brazilian legal order, based on the civilconstitutional methodology. It must be clear that the chosen subject is to be analyzed not only in interdisciplinary conjugations but also in its relevance as a theory and the controversies brought by the theme face to legal orders and within society. As a justification of such choice, it is affirmed the need of establishing a new pattern of conduct for analysis about the right to privacy, in the genetics field, so that phenomena of growing worry, such as genetic discrimination, come to be regarded in oxygenized and humanized ways according to the law. The phenomenon occurs in various fields. On the civil sphere, which interests the most to the present work, some insurance companies are starting to demand the ongoing of genetic exams to the adherent, becoming common the rejection of his or her adhesion when such trials show a predisposition to illnesses. Other than that, there are already narratives of people whose demands of adoption were denied due to genetic tendencies, and even of employers who will not hire individuals because of such discrimination. This was a pursuit for promoting a panorama about genetic privacy, focused on critically evaluating genetic discrimination. Specifically, the goals were: i) to trace a historical background of genetics, especially in which ways it connects with the right to privacy; ii) to analyze national and foreign doctrine about the theme; iii) to investigate the origins, the concept, the reasons, the impact and the severity level of genetic discrimination in various social instances – mainly the collective vision of the Brazilian society about it; iv) to propose viable solutions, willing to conciliate shocking interests, in ways to reinforce the prohibition of this new odious form of discrimination. As a result, the conclusion acquired was that genetic discrimination is a form of severe violation to several personality rights, and it must be incisively prohibited by the Public Power s means, beyond equally fought in the private sectors of the society.