Inmate vocational training involves implementing educational and skills-based programs aimed at transforming inmates’ values, preparing them for employment, and facilitating their effective reintegration into society upon release. This study examined the relationship between correctional inmates’ vocational training and crime control in Calabar and Obubra custodial centers in Cross River State, Nigeria. The structural functionalist perspective of Radcliff Brown was used to explain the subject matter. A survey design was employed, utilizing a structured questionnaire and a multistage sampling approach that combined purposive and cluster sampling techniques, involving 200 respondents. Demographic data were analyzed using frequency methods, while the hypothesis was tested with Pearson’s product-moment correlation coefficient, skewness, and kurtosis methods. Findings indicate that vocational training for inmates can significantly influence crime control in these custodial centers. The study concludes that health and vocational training are essential needs for inmates, and the quality of their correction can be judged by their ability to control criminal behavior in society. It is recommended that government at all levels recognize the importance of vocational training for inmates as an effective mechanism for crime control, which can contribute to restructuring the Nigerian Correctional Service (NCS) and ultimately aid in reducing crime.