William Brock may refer to:
Bill Brock (1930–2021), American senator William Brock (Australian politician) (1851–1913), member of the Tasmanian House of Assembly William Rees Brock (1836–1917), Canadian politician William Brock (pastor) (1807–1875), British nonconformist minister William A. Brock (born 1941), American economist William E. Brock (1872–1950), American politician, grandfather of Bill Brock William S. Brock (1895–1932), American aviator William John Brock (1817–1863), religious writer William Hodson Brock (1936–2025), British chemist and science historian William Brock (historian) (1916–2014), British historian of the United States. William Brock (MP), MP for City of Chester