| Halanzy | |
| Flag Size: | 120x100px |
| Pushpin Map: | Belgium#Europe |
| Pushpin Label: | Halanzy |
| Coordinates: | 49.5597°N 5.7431°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Belgium |
| Subdivision Type1: | Region |
| Subdivision Type2: | Province |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Aubange |
| Population Density Km2: | auto |
| Area Code Type: | Area codes |
Halanzy (Gaumais: Halazi; Luxembourgish; Letzeburgesch: Hueldang;[1] German: Holdingen) is a village of Wallonia and a district of the municipality of Aubange, located in the province of Luxembourg, Belgium.
The history of Halanzy is connected to the mining of iron ore in the area. A memorial of its past as a mining town is the preserved early steam locomotive in the town centre. The village church dates from 1844, and there is also a chapel built in 1725 in gratitude for the village being spared from the cholera epidemy in 1720. Similarly, a calvary group in the village was erected to celebrate that the village was spared destruction during World War I.[2]