William Calder
William Calder may refer to:
Politicians
- William M. Calder, American politician
- William Henderson Calder, New Zealand politician
- William Calder, Lord Provost of Edinburgh 1810–11
Others
- William Calder , Scottish footballer
- Bill Calder, Scottish footballer
- William Calder , from New Zealand
- William Calder, of the Calder baronets