Joseph Osbertus Hamley CB (25 September 1820 – 5 July 1911) was a British Army Officer who administered the New Zealand station of the British Army Military Store Department during the New Zealand Wars. Returning to England in 1870, Hamley was appointed in charge of Gun Wharf at Chatham, followed by postings to the War Office, Dover and Aldershot. Hamley retired after fifty years of service (thirty-two overseas) with the honorary rank of Major General. Hamley died in London on 5 July 1911.