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.
“Together, we will continue to promote an industry that is more sustainable and inclusive than it was yesterday, reminding our neighbouring industries and international governments that travel is an essential necessity to life.”