/kastˈed͡ʒːo/
- Lombardy
- Vineyard Area: N/A
- Year Appellation Started: 2010
- Appellation Last modified: 2014
- Rosso (Red)
- Total Production: 170 Hectolitres
- Red Wine: 100%
- Casteggio DOC is a wine appellation located in the Lombardy region of northern Italy, particularly in the province of Pavia, within the renowned Oltrepò Pavese area. This small but notable DOC produces both red and white wines and has a rich history in Italian winemaking.