Gaja is an Italian wine producer from the Piemonte region in the district of Langhe, chiefly producing a number of Barbaresco and Barolo wines, and later diversified into Brunello and "Super-Tuscan" production. Its current owner and president Angelo Gaja is credited with developing techniques that have revolutionised winemaking in Italy, and terms such as "the undisputed king of Barbaresco", and "the man who dragged Piedmont into the modern world" have been applied to him, and whose Barbaresco wine is considered a status symbol on a par with Château Lafite-Rothschild or Krug.
Additionally, Gaja Distribuzione imports to Italy high-end wines from elsewhere in the world including Champagne, Sauternes and Bordeaux, Spanish and Californian wine, as well as spirits and glassware.
The Gaja winery was founded in 1859 by Giovanni Gaja, the Gaja family having arrived from Spain during the 17th century. The family Gaja opened a tavern in Barbaresco, serving its wines with the food. At the end of the 19th century, Gaja wines were bottled and supplied to the Italian army in Abyssinia.
In 1937, Giovanni Gaja first put the name Gaja in big red letters on his bottles' labels. The firm progressed following World War II as Giovanni Gaja made a significant series of vineyard purchases in terms of scale and vineyard quality. Also cited as an important influence to the firm's early success is the mother of Giovanni Gaja, Clotilda Rey, who instilled the principles of working to achieve high quality to attract the desired clientele, and set high prices to manifest the prestige of the product.