The Criminal Enforcement Law (LEP no 7.210 of July 11, 1984) in Chapter II of Assistance, Section I, Article no 10 establishes assistance to the prisoner and the internee as a duty of the State, with the purpose of preventing crime and guiding the return to coexistence in society, which extends to the egress. In Article 11, we list the assists that will be entitled. They are: I - Material; II - Health; III - Juridical; IV - Educational; V - Social; VI - Religious. Specifically, in Section VII, Religious Assistance, Article 24 establishes the freedom of worship given to the victims, allowing them to participate in religious services organized in the penal establishment, as well as the possession of books of religious institutions. In addition to the Federal Constitution (1988) in its Article no 05 VI, it is stated that no prisoner may be required to profess any faith, since Brazil is a secular or non-confessional country, besides freedom to exercise any faith is established as a fundamental right. From compliance with the law, it is imperative to analyze the academic production on prison religious assistance, through a research of the state of knowledge, in order to highlight the relevance that the topic occupies, as well as, gaps to be filled. Resulting in 47 (85%) dissertations and 09 (15%) theses, totaling a production of 56 works between 1994 and 2017.