Digital literacy has become an essential skill for meaningful participation in today’s increasingly digitized society. However, marginalized communities—such as low-income groups, ethnic minorities, older adults, and individuals with limited formal education—often face significant barriers to acquiring these skills. This article examines the structural, socio-economic, and cultural factors that hinder digital inclusion and explores targeted strategies to promote digital literacy in underserved populations. Drawing on case studies, policy reviews, and community-based initiatives, the study highlights the effectiveness of localized training programs, culturally relevant content, public-private partnerships, and the role of trusted community intermediaries. It also emphasizes the importance of addressing infrastructural deficits such as access to devices and affordable internet. The article contributes to the discourse on digital equity by proposing a holistic framework for sustainable digital literacy promotion that aligns with broader social inclusion goals. Its findings provide practical insights for educators, policymakers, and organizations working to bridge the digital divide and empower marginalized communities in the digital era.