Cauayan have its name from the word Cawayan meaning bamboo or bulo in the Ilocano language, the early settlers of the place. How it got its name is vaguely told by the natives. In the tale, early Spaniards reached the place found abundant bamboo trees along creeks that circled the town site of Bulod, Sipat, Bungkol, and Marabulig creeks where few families lived. It was also a common to see crocodiles basking under the cluster of bamboo along the creeks in the early morning sun.
