William Henry Walsh FBA FRSE (/wɒlʃ/; 10 December 1913 – 7 April 1986) was a 20th-century British philosopher and classicist.
In an essay on "Meaning in History," he argued that the role of the historian is to neither to catalogue events nor to trace chains of causation, but rather to draw out connections between details and events in ways that make the past, if never quite tidy, then still broadly intelligible.
He was posted to the Cryptography School at Bedford, and then to do intelligence work for the Foreign Office (1941–1945), based at Bletchley Park.
His proposers were John Steven Watson, Matthew Black, Norman Gash and Frank Gunstone.
In 1938, Walsh married Frances Beatrix "Trixie" Ruth Pearson who studied French at Oxford.