William Lutley Sclater

William Lutley Sclater (September 23, 1863 - July 7, 1944) was a British zoologist and museum director. He was the son of Philip Lutley Sclater.

Sclater was the first director of the South African Museum from 1896 to 1906, having previously worked at the Indian Museum in Calcutta. From 1909 to 1944 he worked at the Natural History Museum.

Sclater was editor of Ibis from 1913 to 1930, president of the British Ornithologists' Union from 1928 to 1933, and secretary of the Royal Geographical Society from 1931 to 1943.

In July 1944 he was killed by a V-1 flying bomb in London.