Contraband smuggling has emerged as a significant challenge to prison governance in post-apartheid South Africa, undermining institutional security, rehabilitation objectives, and the rule of law within correctional facilities. This study employs a systematic literature review (SLR) methodology to examine the nature, drivers, and implications of contraband smuggling in South African prisons. Relevant academic articles, government reports, policy documents, and correctional services publications published between 1994 and 2025 were systematically identified, screened, and analysed to synthesise existing knowledge on the phenomenon. The review reveals that contraband items, including drugs, mobile phones, weapons, alcohol, and illicit financial instruments, are frequently introduced into correctional centres through diverse channels involving visitors, corrupt officials, service providers, and increasingly sophisticated criminal networks. Findings indicate that overcrowding, staff shortages, corruption, inadequate surveillance technologies, and the growing influence of prison gangs create opportunities for illicit trafficking within correctional environments. The review further demonstrates that contraband smuggling strengthens organised criminal activity, contributes to violence and intimidation, facilitates coordination of crimes beyond prison walls, and weakens efforts aimed at offender rehabilitation and reintegration. Moreover, the persistence of illicit economies within prisons erodes public confidence in the correctional system and poses broader national security concerns. The study highlights the need for a comprehensive governance approach that integrates enhanced security technologies, anti-corruption strategies, intelligence-led operations, staff training, and inter-agency collaboration. By synthesising the available literature, this review deepens understanding of contraband smuggling as a strategic threat to prison governance. It provides a foundation for future research and policy interventions to strengthen correctional management in South Africa's democratic era.