William Ziegler
William or Willi Ziegler may refer to:
- William T. Ziegler, American politician from Pennsylvania
- William Ziegler , American industrialist
- William Ziegler Jr., adopted son
- William Ziegler , American film editor
- William Ziegler III, owner of Swisher International Group and son of Ziegler Jr.
- Willi Ziegler, German paleontologist