Acute or chronic laryngitis, laryngeal trauma, vocal cord paralysis, cysts of the vocal cord, and benign or malignant tumors of the vocal folds are frequent causes of hoarseness. It is important to identify the cause of hoarseness to rule out potential malignancies. In this case report, we describe a patient with a bilateral aphthous ulcer in the vocal cords who was admitted with hoarseness and had been previously diagnosed with Behcet disease. Behcet disease is characterized by mucosal aphthous lesions, which are found primarily in oral and genital regions. To the best of our knowledge, this is the first instance of a patient with bilateral aphthous ulcer in the vocal cords.