Cincinnatus Heine Miller (/ˌsɪnsɪˈneɪtəs ˈhaɪnə/; September 8, 1837 – February 17, 1913), better known by his pen name Joaquin Miller (/hwɑːˈkiːn/), was an American poet, author, and frontiersman. He is nicknamed the "Poet of the Sierras" after the Sierra Nevada, about which he wrote in his Songs of the Sierras (1871).