The asbl TTA or Tramway Touristique de l'Aisne (Aisne Touristic Tramway) is the official designation of the touristic exploitation of a former rural vicinal tramway in Belgium.
The line is the oldest and longest tramway of the Luxembourg, between Érezée and Dochamps. It is a 1,000 mm (3 ft 3 3⁄8 in) gauge line along the Aisne river.
An extension towards Lamormenil is in the works.