Dr Walter Aubrey Kidd MD FRSE MRCS FZS (1853-1929) was a British physician and medical author.
He was born in Blackheath, London on 20 July 1852, the son of Dr Joseph Kidd and his wife, Sophia McKern. His brothers included Dr Percy Kidd. He was educated at Rottingdean then Uppingham School.
He followed in the family tradition and studied Medicine at Corpus Christi College in Cambridge from 1870 later gaining his doctorate (MD) at the University of London. He worked at Guy's Hospital in London and as a GP in Blackheath.
In 1907 he was elected a Fellow of the Royal Society of Edinburgh. His proposers were Daniel John Cunningham, Charles E. S. Phillips, Ramsay Heatley Traquair and George Archdall O'Brien Reid.
His book Initiatives in Evolution looked at very odd elements of evolution such as the evolution of human hair.
He retired in 1915 and moved to Cheltenham in 1918. He moved to South Africa in 1927.
He died of heart failure on 21 February 1929 at Peak's View in the Rondebosch suburb of Cape Town in South Africa.
He married Alice Harriet Benn (d.1947) in 1881.
They had four children: Alice Sophie Kidd, Walter Shirley Kidd, Edward Aubrey Kidd, and Hubert John Kidd.