Obstructive Sleep Apnea syndrome (OSAS) is a clinical condition accompanied by episodes of respiratory arrest, sleep fragmentation, oxygen desaturation, and excessive daytime sleepiness due to obstructions in the upper airway during sleep. Contrary to popular belief, OSAS is much more common in society. In some patients, we can observe symptoms of OSAS easily; however, some of the patients may not indicate any symptoms. Although the interest and research on the causes of OSAS and the mortality rate associated with cardiovascular disease have increased, this relationship has still not completely understood. The results of several proven trusted clinical trials support the hypothesis that OSAS increases the risk of stroke, arrhythmias (atrial fibrillation, bradyarrhythmia, supraventricular tachycardia, ventricular arrhythmia), coronary artery disease, acute myocardial infarction, and cardiac arrest as much as essential or resistant hypertension. In this case report, we wanted to demonstrate OSAS as a cause of arrhythmia in a young obese patient without OSAS symptoms, and an arrhythmia that improved with OSAS therapy.