| Type: | commune |
| County: | Alba |
| Galda de Jos | |
| Leader Name: | Ioan Neag[1] |
| Leader Party: | PNL |
| Leader Term: | 2024 - 2028 |
| Coordinates: | 46.1833°N 60°W |
| Elevation: | 236 |
| Area Total: | 101.69 |
| Population Total: | auto |
| Postal Code: | 517285 |
Galda de Jos (German: Unter-Hahnenberg; Hungarian: Alsógáld) is a commune located in Alba County, Transylvania, Romania. It is composed of eleven villages: Benic (Borosbenedek), Cetea (Csáklya), Galda de Jos (Alsógáld), Galda de Sus (Felsőgáld), Lupșeni, Măgura, Mesentea (Kismindszent), Oiejdea (Vajasd), Poiana Galdei, Răicani (Rajkány), and Zăgriș.
The commune lies on the banks of the river Galda, in the central-north part of the county, southwest of Teiuș and north of the county seat, Alba Iulia.