John S. Macdonald

John S. Macdonald may refer to:

• John Sandfield Macdonald, first Premier of Ontario
• Harry Macdonough (John Scantlebury Macdonald), Canadian singer and recording executive of the early 20th century
• John S. MacDonald, Canadian engineer and businessman
• John Smyth Macdonald (1867–1941), British physiologist

See also

• John Macdonald (disambiguation)

Topics referred to by the same term

This disambiguation page lists articles about people with the same name.
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