The main objective of this research is study of impact of the prison library services on prisoners’ spiritual well-being. Descriptive survey method was adopted and four null hypotheses were tested to achieve the main objective. A research questionnaire was used to collect data on the sampled 80 prisoners. Result indicated that information needs, accessibility to library information resources and utilization of library information resources are very critical ingredients in determining the spiritual well-being of prisoners. There was significant relationship between: spiritual well-being and utilization of library information resources (r=0.660; (p=0.000) ≤0.05), accessibility to library information resources by prisoner (r=0.341; (p=0.016) ≤0.05) and significant relationship between information needs and spiritual well-being (r=0.433; (p=0.019) ≤0.050). In the analysis presented, providing for the needs of these prisoners will help in achieving the objectives thus spiritual well-being, rehabilitating, re-socializing, and re-integrating and preparing the prisoners into becoming better citizens who can re adapt into the society after prison.