He joined exhibition firm Brintex in 2002 but told OLN he has taken the decision to move on.
Ross Carter, currently a buyer at importer PLB, will replace Murray in January.
Carter has worked at PLB since 2011 and was previously international sales manager for the London International Wine Trade Fair.
Murray said: "I will stay in the events world. But I have been at Brintex for 10 years and have taken the decisions to move on. I love the industry and I love the show, but am looking at new horizons."