Prisons are invariably unisex institutions where, besides many deprivations, heterosexual expression in its normal sense is absent. It is this characteristic that make prisons settings potentially fertile grounds for sexual aberrations. Since definite and accurate data concerning sexual activities among prison inmates are difficult to obtain, the phenomenon of sexual practices in prisons has traditionally been a topic of much speculation. However, the descriptions and explanations of most authors on the subject are often contradictory, and some of the best information are from unpublished sources. This article is an attempt to subsume many fragmented explanations about seven main types of sexual issues in prisons (i.e. consensual homosexuality, masturbation, transsexualism, prostitution, conjugal visits, sex between prisoners and prison staff, and rape among prison inmates) under more general criminological and management concepts. Suggestions for prison administrators on how to manage these complex issues in the best interests of security and inmates' health are also provided.