Mental health is increasingly recognized as a critical aspect of overall well-being, with rising cases of stress, anxiety, and social isolation worldwide. Libraries, traditionally known as centers of knowledge and learning, are evolving to become vital community spaces that support mental health through various programs, resources, and inclusive environments. This article explores the role of libraries in promoting mental well-being by providing safe spaces, mindfulness workshops, digital resources, and community engagement initiatives. It also examines challenges such as funding, staff training, and social stigma, while offering recommendations for strengthening libraries as hubs for mental health support. The findings highlight the potential of libraries to contribute significantly to public mental health and underscore the need for strategic collaboration and innovation in library services.