Ralph Knox may refer to:
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Ralph Knox (politician)
John Ralph Knox (January 1, 1905 – March 24, 1981) was a politician in Ontario, Canada. He was a Progressive Conservative member of the Legislative Assembly of Ontario from 1963 to 1967 who represented the southwestern riding of Lambton West ...
(1905–1981), politician in Ontario, Canada
* Sir
Ralph Henry Knox (1836–1913), British civil servant
{{hndis, Knox, Ralph