John Key took on the tourism portfolio in 2008 and the industry praised his work in the role.
Tourism has this year usurped dairy as the country's top foreign exchange earner and industry leaders say Key's profile has helped.
"While his availability to get around the country as tourism minister was affected (by being prime minister) it would be hard to find anyone in the industry who wasn't impressed by him," said Tourism Industry Aotearoa chief executive Chris Roberts.
Previous tourism ministers had a much lower ranking in Cabinet.
"On every overseas trip he has done there was a tourism element to it and he was able to clear some hurdles at prime minister to prime minister level," said Roberts.