James Halliday may refer to:
- James Halliday (Canadian politician) (1845–1921), represented Bruce North in the Canadian House of Commons from 1901 to 1904
- James Halliday (weightlifter) (1918–2007), British weightlifter
- James Halliday (writer) (born 1938), Australian wine critic and writer
- Jimmy Halliday (1927–2013), leader of the Scottish National Party 1956–1960
- James Halliday, a deceased character in the novel, Ready Player One
This disambiguation page lists articles about people with the same name.
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