Hamartoma of lung is a common tumor, majority of which are small and incidentally discovered during plain chest radiography. Our case is a 30-year-old gentleman with an extremely uncommon presentation of a common tumor, that is, a giant hamartoma of lung presenting as massive hemoptysis and intractable cough. To the best of our knowledge, such occurrence of giant pulmonary hamartoma is very uncommon and its presentation with massive hemoptysis is even more uncommon. Less than 20 cases of giant hamartoma of lung have been reported in the English literature so far.