Duffes
Duffes stands for:
- a vineyard cottage in the town of Bad Honnef in the Rhein-Sieg district, North Rhine-Westphalia, see Weinberghäuschen (Rhöndorf)
- a former prison in the city of Viersen in the district of Viersen, North Rhine-Westphalia, see list of architectural monuments in Viersen (M – S)