| Jalhay | |
| Picture-Legend: | The Saint Michael's church (twisted church tower). |
| Map: | Jalhay Liège Belgium Map.svg |
| Map-Legend: | Location of Jalhay in the province of Liège |
| Arms: | Blason Jalhay.svg |
| Arrondissement: | Verviers |
| Nis: | 63038 |
| Mayor: | Michel Fransolet (MR) |
| Majority: | MR/IC/EJS |
| Postal-Codes: | 4845 |
| Telephone-Area: | 087 |
| Web: | www.jalhay.be |
| Coordinates: | 50.5667°N 63°W |
Jalhay (pronounced as /fr/; wa|Djalhé) is a municipality of Wallonia located in the province of Liège, Belgium.
On 1 January 2006 Jalhay had a total population of 7,953. The total area is 107.75 km2 which gives a population density of 74 inhabitants per km2.
The municipality consists of the following districts: Jalhay and Sart.
The highest point of the municipality is the Baraque Michel in the High Fens, at .