Ian Harrison may refer to:

• Ian Harrison (Royal Marines officer), officer in the Royal Marines
• Ian Harrison (wrestler) (born 1969), wrestler in the X Wrestling Federation
• Ian Harrison (judge), judge on the Supreme Court of New South Wales (2007–present)
• Ian Harrison (musician), musician with the early music group Oni Wytars
• Ian Harrison (racing driver), D1 Grand Prix racedriver
• Ian Harrison (table tennis), English table tennis international

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