Marie-Thérèse Chappaz (born 1960) is a Swiss winemaker best known for her dessert wines.
Her vineyards are located in Fully (Valais) and cover an area 8 ha which are organically farmed.
She is member and founder of Les Artisanes de la Vigne et du Vin.
In 2015, Gault Millau declared Chappaz an "icon of Swiss wine" and she was shortly after named "Lady of Wine" at the Villa d’Este Wine Symposium.