Alexander Frederick Richmond "Sandy" Wollaston (22 May 1875, Clifton, Gloucestershire – 3 June 1930, Cambridge) was an English medical doctor, ornithologist, botanist, climber and explorer.
Wollaston was educated at Clifton College and studied medicine at King's College, Cambridge, graduating in 1896 and qualifying as a surgeon in 1903. However, he disliked the medical profession and preferred to spend his life on exploration and natural history. He travelled extensively, visiting Lapland, the Dolomites, Sudan and Japan, as well as participating in an expedition to the Ruwenzori Mountains of Uganda in 1905.
Wollaston was murdered by Douglas Potts, a student, at his rooms in Cambridge.
Wollaston participated in the BOU Expedition to the Snow Mountains of Netherlands New Guinea in 1910–11. The main aim was to climb the highest mountains there as well as to collect biological and ethnological specimens. However, the expedition was unsuccessful in its primary aim largely because of obfuscation by the Dutch authorities.
In 1912 and 1913 Wollaston led a second expedition (the Wollaston Expedition) to New Guinea. There he succeeded in climbing to within 150 m of the summit of the Carstensz Pyramid, at 4884 m the highest peak on the island, and one not summited until 1962.
He is commemorated in the names of a bat, a skink (lizard) and a frog from New Guinea: