Obstructive sleep apnea syndrome (OSAS) patients show multiple physiological deficits and several neuropsychological comorbidities. The aim of this study was to investigate the eating attitudes in OSAS patients. Polysomnography records of 157 were performed. Eating Attitudes Test (EAT), Beck Depression Inventory (BDI), and the Beck Anxiety Inventory (BAI) were applied to all participants. The mean age of the 157 individuals included in the study was 47.2 ± 11.4 (18-76) years and 36% ( = 56) of the individuals were female and 64% ( = 101) were male. When the patients were ranked according to the severity of OSAS, 38.2% ( = 60) were severe, 20.4% ( = 32) were moderate, 24.2% ( = 38) were mild, and 17.2% ( = 27) were OSAS negative. There was a significant difference in terms of the age-and-BMI-adjusted EAT score according to OSAS severity ( = .042). There was a significant difference in the age-and-BMI-adjusted value of the EAT according to the presence of OSAS ( = .011). After controlling age and BMI, no significant correlation was found between the EAT and the BDI ( = 0.012,  = .890) in patients with OSAS while there was a significant positive correlation EAT and the BAI ( = 0.177,  = .046). Considering the association of OSAS with psychiatric disorders, the presence of eating disorders (EDs) becomes an important and special topic. Treatment of patients with OSAS should not only aim to improve the patient’s sleep apnea, but also to improve the patient’s quality of life by evaluating the patient’s psychological and physical functions.