Römermuseum Mengen-Ennetach, Archaeological museum in Mengen, Germany

The Römermuseum Mengen-Ennetach was an archaeological museum that displayed finds from Roman settlements in the region. It was housed in a renovated 1922 barn that had been expanded with modern glass structures.

The museum opened on 1 July 2001 in a 1922 barn in Ennetach's centre, built for 3.7 million Deutsche Mark with EU LEADER II funding. Its collection centred on finds from the Roman fort and settlement of Mengen-Ennetach, whose wooden buildings from the mid-first century AD leave no traces above ground. It closed on 31 December 2015.

The museum conveyed how Romans lived, worked, and spent their time through objects from everyday life. The exhibits gave visitors a sense of how people then traded, dressed, and built their homes.

The museum stood in a 1922 barn in the centre of Ennetach, a district of Mengen; the barn was fitted with an open glass facade between April 2000 and June 2001. It closed on 31 December 2015 because of a heavy operating deficit and difficulty finding a new tenant for the museum café. The roughly five-kilometre archaeological circular trail laid out in 1999 and 2000 around Ennetach remains, but no Roman structures stand above ground.

The museum operated a café where ancient dishes were prepared using recipes from the Roman cookbook De re coquinaria. This gave visitors the rare opportunity to taste authentic Roman food.