D'Oliveiras, officially known as Pereira D'Oliveira, is a historic Madeira wine producer with roots tracing back to 1820. The company was originally founded by João Pereira D'Oliveira, a significant landowner and grower in São Martinho, Madeira. Over the years, the company has remained under the ownership of the D'Oliveira family, maintaining a legacy that spans multiple generations. Today, it is managed by Mr. Luis Pereira d'Oliveira, a fifth-generation descendant of the founder, who is renowned for his dedication to the craft of Madeira wine production.

The D'Oliveiras company is celebrated for its extensive collection of vintage Madeiras, with some of the oldest wines dating back to the 19th century. This includes an array of Verdelhos, Malvasias, Buals, and Sercials, among other varieties. The family has also preserved rare grape varieties such as Terrantez and Moscatel. The company's wine lodge, located in a 17th-century building in Funchal, houses these historic wines, offering a unique experience for visitors who can taste wines from as far back as the 1850s.

D'Oliveiras has a significant stock of old Madeiras, totaling approximately 1,600,000 liters, which is considered one of the largest and most unique collections in the world. This extensive stock is a result of the family's historical preference for selling their wines locally rather than exporting them, a practice that only changed about 30 years ago.

The winemaking process at D'Oliveiras is characterized by traditional methods, reflecting the family's commitment to maintaining the authentic taste and quality of Madeira wine. Mr. Luis Pereira d'Oliveira, known for his old-school approach, plays a crucial role in preserving these methods. The wines are noted for their powerful aromatics, lush mouthfeel, and remarkable structure, with a distinctive citrus character that is essential to great Madeira.

D'Oliveiras' emphasis on traditional winemaking and the preservation of historic vineyards suggests a focus on maintaining ecological balance and heritage. The company's long-standing family ownership and commitment to quality further reinforce its dedication to sustainable practices in the wine industry.