He said he was "blown away" for Te Awanga Estate to be listed alongside wineries like Chapoutier, Penfolds, Vasse Felix and Charles Heidsieck Champagne.
"The Trademark Syrah is our flagship wine, only made in a good vintage from exceptional fruit and with limited bottles," McDonald said.
He said great wines taste like where they come from and varieties like Trademark challenged winemakers to take risks "to see what is possible".
"A few years ago we started looking for ways to capture character in our wines, reflecting more on why our wines taste like they do and how we can make them more individual."
He said the latest accolade was thoroughly rewarding for everyone who played a part in getting it recognised.
It followed the Trademark 2015 Syrah's winning of four trophies, including Best International Syrah, at the International Wine Challenge last year.
"Releasing the Trademark to the world is a little like poking a stick in the ground and saying that this is the best we can create at that particular time at this particular place."
McDonald said he was proud to placed on the Master Winemaker 100 list alongside some of his fellow Kiwi winemaking peers from Greywacke, Te Pa, Marisco and Babich — as well as fellow Bay winery Craggy Range, which got the nod with its Pinot Noir Masters.