Quilombola communities are descended from African slaves who escaped in resistance to imperial rule in Brazil. Today, these communities suffer from inadequate health care and health promotion programs due to socioeconomic, geographic, and political factors. This generates greater vulnerability among these groups because they have limited information about prevention to improve their quality of life. This research aimed to analyze the sexuality of young quilombola adults and the impact on their quality of life through an observational, cross-sectional, quantitative study with descriptive and inferential analyses. Our study is the first to address these issues among quilombolas in the Eastern Amazon region. The participants were 79 individuals of both sexes, aged between 18 to 35 years, belonging to seven communities in the state of Pará. The questionnaires were designed to assess sexual behavior and satisfaction, values and beliefs about sexuality, prejudice regarding sexual and gender diversity, knowledge about sexually transmitted infections (STIs), beliefs about maternity, and quality of life. Women reported greater sexual dissatisfaction and lower quality of life than men. Men reported no dysfunctions; however, they were highly prejudiced towards sexual and gender diversity. Low education negatively impacts the health of quilombola populations, as knowledge about STIs and values and beliefs influence sexual behavior, exposing individuals to diseases. The research also confirms that, both among quilombolas and other groups, factors such as sexual satisfaction, values and beliefs about reproduction, and affectivity directly influence the quality of life.