Roussanne is a white wine grape grown originally in the Rhône wine region in France, where it is often blended with Marsanne. It is the only other white variety, besides Marsanne, allowed in the northern Rhône appellations of Crozes-Hermitage AOC, Hermitage AOC and Saint-Joseph AOC. In the southern Rhône appellation of Châteauneuf-du-Pape AOC it is one of six white grapes allowed, where it may be blended into red wines. Roussanne is also planted in various wine-growing regions of the New World, such as California, Washington, Texas, South Africa and Australia as well as European regions such as Crete, Tuscany and Spain.

The berries are distinguished by their russet colour when ripe—roux is French for the reddish-brown colour russet, and is probably the root for the variety's name. The aroma of Roussanne is often reminiscent of a flowery herbal tea. In warm climates, it produces wines of richness, with flavours of honey and pear, and full body. In cooler climates it is more floral and more delicate, with higher acidity. In many regions, it is a difficult variety to grow, with vulnerability to mildew, poor resistance to drought and wind, late and/or uneven ripening, and irregular yields.

Wines made from Roussanne are characterised by their intense aromatics which can include notes of herbal tea. In its youth it shows more floral, herbal and fruit notes, such as pear, which become more nutty as the wine ages. Roussanne from the Savoie region is marked by pepper and herbal notes. Wine expert Oz Clarke notes that Roussanne wine and Roussanne dominated blends can drink very well in the first 3 to 4 years of their youth before entering a "dumb phase" where the wine is closed aromatically until the wine reaches 7 or 8 years when it develops more complexity and depth.

Alternative Names: Bergeron, Fromental