William Percival Crozier (1 August 1879 – 16 April 1944) was a British journalist and editor of the Manchester Guardian from 1932, when he succeeded Ted Scott, who had died in a sailing accident, until his death in 1944.
Under Scott, Crozier reorganized the Guardian's foreign news service, increased the use of photographs and maps, encouraged new features and introduced the daily crossword in 1929.
Foreign news had always been Crozier's chief interest and his editorship coincided with the establishment of the National Socialist regime in Germany and the Second World War.
Working closely with his friend and sometime German correspondent, F. A. Voigt, Crozier "considered it no less than his duty personally and persistently to expose the Nazis" (Morris) and pursued this policy with a crusading zeal until the very end.
Crozier was part of the Military Police operations overseeing logistics landings using the Mulberry Harbours at Gold Beach (Arromanche) after D-Day.