Obstructive Sleep Apnea Syndrome (OSAS) is a chronic disease characterized by intermittent hypoxia and sleep fragmentation resulting from recurrent upper airway obstructions. The physiological and neurocognitive changes caused by the disease can affect how individuals perceive and interpret bodily sensations. Although body awareness plays a significant role in the perception and management of symptoms, its relationship with clinical parameters in individuals with OSAS has not been sufficiently investigated. Therefore, the aim of our study is to examine the relationship between body awareness and respiratory function, disease severity, fatigue, shortness of breath, and sleep quality in OSAS patients.