Sir William Beach Thomas, KBE (22 May 1868 – 12 May 1957) was a British author and journalist known for his work as a war correspondent and his writings about nature and country life.
Thomas was the son of a clergyman in Cambridgeshire. He was educated at Shrewsbury School and Christ Church, Oxford, before he embarked on a short-lived career as a schoolmaster. Finding that work unpleasant, he turned his attention to writing articles for newspapers and periodicals and began to write books.
During the early part of the First World War, Thomas defied military authorities to report news stories from the Western Front for his employer, the Daily Mail. As a result, he was briefly arrested before being granted official accreditation as a war correspondent. His reportage for the remainder of the war received national recognition, despite being criticised by some and parodied by soldiers. His book With the British on the Somme (1917) portrayed the English soldier in a very favourable light. Both France and Britain rewarded him with knighthoods after the war, but Thomas regretted some of his wartime output.
Thomas's primary interest as an adult was in rural matters. He was conservative in his views and after the Second World War feared that the Labour government regarded the countryside only from an economic perspective. He was an advocate for the creation of national parks in England and Wales and mourned the decline of traditional village society. He wrote extensively, particularly for The Observer newspaper and The Spectator, a conservative magazine. His book The English Landscape (1938) included selections from his contributions to Country Life magazine.