Zachary Hickes (1739 – 25 May 1771) was a Royal Navy officer, second-in-command on Lieutenant James Cook's first voyage to the Pacific and the first among Cook's crew to sight mainland Australia. A dependable officer who had risen swiftly through the ranks, Hickes conducted liaison and military duties for Cook including command of shore parties in Rio de Janeiro and the kidnapping of a Tahitian chieftain in order to force indigenous assistance in the recovery of deserters. Hickes' quick thinking while in temporary command of HMS Endeavour also saved the lives of Cook, Joseph Banks and Daniel Solander when they were attacked by Māoris in New Zealand in November 1769.