ABSTRACT Introduction: Carbon monoxide-(CO) is a colorless, odorless and non-irritating gas absorbed from the lung. CO binds to hemoglobin in the blood with an affinity of 200 times greater than oxygen, forming a carboxyhemoglobin-(COHb) complex, thus reducing the release of oxygen to tissues and causing tissue hypoxia and ultimately neurological symptoms. In the literature, the clinic of sensorineural hearing loss due to acute or chronic CO poisoning has been described. Although hearing loss is generally bilateral sensorineural, there are also publications reporting unilateral hearing loss. In our article, we report the clinic and the treatment approaches of bilateral sensorineural hearing loss due to acute CO poisoning in a 22-year-old male patient.