Hyperthyroidism is a rare cause of dysphagia. We report a case of dysphagia as the first symptom of hyperthyroidism in a patient who improved with antithyroid agents and swallowing rehabilitation. An 81-year-old man was diagnosed with Graves’ disease after being hospitalized for recurrent aspiration symptoms that included cough and sputum for two months. The patient was given methimazole, propranolol, and Lugol solution as well as conventional swallowing rehabilitation for 60 minutes a day. Two weeks after initiation of treatment, the patient’s thyroid function tests saw improvement. He showed significant improvement in dysphagia after 3 weeks of treatment.Persisting improvement in swallowing was also found at 6 months post-treatment. Dysphagia may be the first symptom of hyperthyroidism in elderly patients, and physicians should consider performing thyroid function tests for evaluating such patients.