Francisco Moreno first saw the mountain on 2 March 1877. He named it Fitz Roy, in honour of Robert FitzRoy, who, as captain of the HMS Beagle had travelled up the Santa Cruz River in 1834 and charted large parts of the Patagonian coast.
Cerro is a Spanish word meaning hill, while Chaltén comes from a Tehuelche (Aonikenk) word meaning "smoking mountain", due to a cloud that usually forms around the mountain's peak. Fitz Roy, however, was only one of a number of peaks the Tehuelche called Chaltén
