John Longworth (born 14 May 1958) is a British business consultant and politician.
He was the director-general of the British Chambers of Commerce from September 2011 until March 2016, when he departed in controversy by breaking with the organisation's line on Brexit on the day of its conference.
Longworth is the chairman of Leave Means Leave.
He was a Brexit Party Member of the European Parliament (MEP) for Yorkshire and the Humber from July 2019 until losing the party whip in December 2019.