Harold Earle Riddiford (13 October 1921 - 26 June 1989) was a New Zealand mountaineer, lawyer and farmer who went on three mountaineering expeditions to the Himalayas in the 1950s; the first New Zealand expedition to the Garhwal Himalaya in 1951, the 1951 British Mount Everest reconnaissance expedition, and the disastrous 1952 British Cho Oyu expedition.