Alfred Hyde Cockayne CBE ISO (23 May 1880 – 21 October 1966) was a New Zealand botanist, agricultural scientist and administrator.

He was born in Dunedin, or Oamaru, New Zealand, on 23 May 1880.

He was the son of another noted botanist Leonard Cockayne.

[1] In the 1937 Coronation Honours, Cockayne was made a Companion of the Imperial Service Order.

[2] In the 1957 Queen's Birthday Honours, he was appointed a Commander of the Order of the British Empire, for services to agriculture.