Digital literacy training programs (DLTPs) are influential in developing digital skills to help build a more inclusive and participatory ecosystem. This study reviews 86 studies related to DLTPs for marginalised populations in developed and developing countries. It aims to understand (a) the profile of DLTPs, (b) the digital competences incorporated in the training curriculum and (c) tangible outcomes of Internet use post-training. The review indicated that developed countries focus more on developing digital literacy in elderly populations. In contrast, the focus still lies on developing digital literacy among people with low skills and education levels in developing countries. The training curricula focus mainly on developing information-seeking and communication competencies, besides the basic operations of digital devices. Most of the studies reported an increase in the personal-level outcomes around health, leisure and self-actualisation achieved post-training. This study can help policymakers, practitioners, and educational researchers improve the scope and quality of educational programs and contribute to people's digital empowerment and well-being.