Adolescence is a challenging transition from childhood to adulthood and is often characterized by mental health and emotional difficulties. Many of these challenges have been exasperated by post COVID-19 pandemic stressors, and for adolescents in some parts of the world, by the new realities of war and violent conflicts. We conducted a multi-phase study to understand how information institutions, and particularly libraries, can support adolescent’s mental health needs. The paper reports the findings from the interviews conducted with the U.S. and Ukrainian teenagers and outlines recommendations for libraries to support adolescents by offering curated content and mental health assistance, providing safe spaces to obtain information and socialize with others. The framework of resilience is also introduced.