William Brock
William Brock may refer to:
- William Brock (MP), MP for City of Chester
- Bill Brock, American senator
- William Brock (Australian politician), member of the Tasmanian House of Assembly
- William Brock (Canadian politician), Canadian politician
- William Brock (pastor), British nonconformist minister
- William A. Brock, American economist
- William Emerson Brock, American politician, grandfather of Bill Brock
- William S. Brock, American aviator
- William John Brock, religious writer
- William Hodson Brock, British chemist and science historian