Cantina di Casteggio is a wine company based in the municipality of Casteggio in the province of Pavia, Lombardy. It is one of the most important wineries in the province, historically known for its vineyards and for the numerous awards it has received. These factors have prompted producers to invest in the area to exploit its full potential, constantly improve quality and explore new markets. Cantina di Casteggio wines are characterised by a balanced level of sugar and alcohol and a good fixed acidity, which enhances the aromas and helps preserve them over time.

Since 1907, the Cantina di Casteggio has been a flagship of the Oltrepò Pavese region. Thanks to more than a century of history, the continuous updating of agricultural practices and the experience of qualified oenologists, the winery produces significant wines that honour the hard work in the vineyards.

The Casteggio winery is part of the largest and most important wine cooperative in Northern Italy, Terre d'oltre Po', with 660 members and 5,000 hectares of land dedicated to grape cultivation.

TDO also represents one of the oldest cooperative wineries in the area, located in the heart of the largest area in Italy dedicated to the cultivation of Pinot Noir.