Stewart’s induction represents the “actionable change and strides forward” he has made during his career in the travel industry.
Julia Simpson, president and chief executive of WTTC, said: “I am delighted to welcome Adam to the executive committee of WTTC.
“Adam brings with him a wealth of experience having worked so closely with his late father to build what is now one of the most recognised brands in our industry.”
Stewart added: “This leadership team is passionately focused on the efforts of the travel and tourism sector, and I am eager to contribute.