World Lung Day is observed worldwide every September 25 to highlight the importance of lung health and educate the public on preventing respiratory diseases. Established in 2017 by the Forum of International Respiratory Societies, the day aims to unite healthcare professionals, researchers, and policymakers to address the burden of respiratory diseases globally. The campaign focuses on critical issues related to lung health, such as inequalities in access to care and resources for managing respiratory illnesses, particularly in low- and middle-income countries. Activities on this day include public lectures, educational workshops, free health screenings, and advocacy campaigns. Participants are encouraged to engage in local events, learn about respiratory health, and support organizations that fund research and assist patients.