Òdena is a municipality in the comarca of Anoia, in Barcelona province, Catalonia, Spain. It lies in the centre of the Òdena Basin, on the side of a small hill.
The remains of Òdena castle, including its octagonal tower, stand at the top of the hill above the town.
The town is served by the C-241 road from Igualada to Manresa, while the main N-II road from Barcelona to Lleida runs through the municipality.