John S. McCain may refer to:

People

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  • John S. McCain Sr. (1884–1945), United States Navy admiral
  • John S. McCain Jr. (1911–1981), United States Navy admiral and son of John S. McCain Sr.
  • John S. McCain III (1936–2018), United States Navy captain, American statesman, politician, and son of John S. McCain Jr.

Ships

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See also

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