Machtum (Luxembourgish: Meechtem) is a small town in the commune of Wormeldange, in south-eastern Luxembourg. As of 2005, the town has a population of 286. In the Moselle valley wine region, Machtum – along with Wormeldange, Ahn, and Ehnen – hosts the Riesling Open wine festival in September.
Coordinates: 49°39′N 6°26′E / 49.650°N 6.433°E