The growing recognition of sleep apnea by clinicians and health systems, has led to the realization that sleep apnea is a chronic and complex disease with a wide range of phenotypic manifestations and morbidities. Furthermore, it has prompted observations that it may co-occur in the context of other respiratory diseases, and that such concurrent presence of sleep apnea and a lung disease may mutually alter their clinical presentation and course, as well as modify the response to treatment. This session will explore the current state of the art in the context of sleep apnea co-existing with other frequent lung diseases and identify potential clinical, research and educational opportunities in this relatively unexplored area.