Castellargo Family Vineyards is a winery in northeastern Italy, located in the Friuli-Venezia Giulia region. While a relatively young company, having been founded in 1978, its success is deeply rooted in the passion and knowledge of its founder, Argo Atal Castellarin. He dedicated himself to the family's vineyards for over three decades, focusing on the cultivation of grapes in some of the region's best climatic areas, including the hills of Collio and Colli Orientali del Friuli, and the plains of Friuli Grave.

The brand's philosophy is centered on producing wines that offer an excellent quality-price ratio, reflecting a deep respect for the terroir of Friuli. Castellargo crafts a wide range of wines, from international varietals like Chardonnay and Sauvignon Blanc to native grapes like Friulano. They are particularly known for their white wines, which are celebrated for their elegance, flavor, and expression of the region's unique characteristics.

While a relatively small-scale winery with an artisanal approach to quality, Castellargo has an international philosophy, successfully exporting its wines to a global market. This dual focus on handcrafted quality and broad accessibility has allowed the brand to become a respected name in Italian viticulture.