| Official Name: | Alga |
| Settlement Type: | town |
| Pushpin Map: | Kazakhstan#Asia |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Aktobe Province, Kazakhstan |
| Subdivision Type: | Country |
| Subdivision Name: | Kazakhstan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Aktobe Region |
| Subdivision Type2: | District |
| Established Date: | 1961 |
| Population As Of: | 2009 |
| Population Total: | 19 705 |
| Utc Offset: | +5 |
| Coordinates: | 49.9028°N 57.3333°W |
| Elevation M: | 270 |
| Postal Code: | 030200 |
| Area Code: | +7 71337 |
Alga (Kazakh: Алға, Alğa) is a town in the Aktobe Region of western Kazakhstan. It is situated on the western bank of the Ilek (Jelek) River, and on the railway line from Aktobe to Aralsk. Population:
It used to have a chemical phosphate plant which is now a ruin, but caused a lasting environmental damage as large quantities of chemical waste was collected in ponds without insulation to the aquifer.