Castello di Chignolo Po is a historic castle located in the town of Chignolo Po in the province of Pavia, Lombardy, Italy. The castle was originally built in the 13th century and has undergone several modifications and renovations over the centuries.

The castle is notable for its impressive defensive features, including a large moat, drawbridge, and watchtower. The castle also features a courtyard, a chapel, and several rooms decorated with frescoes and period furnishings. The castle has been owned by various noble families over the centuries, including the Visconti, Sforza, and Gonzaga families.

Today, the castle is open to the public and serves as a museum showcasing the history and culture of the region. Visitors can explore the castle's various rooms and exhibits, which include art, artifacts, and interactive displays. The castle is also a popular venue for weddings and events, and hosts various cultural events throughout the year.