| Salza | |
| Mouth Coordinates: | 47.6706°N 14.7275°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Austria |
| Length: | 90.3km (56.1miles) |
| Source1 Elevation: | 449m (1,473feet) |
The Salza (also Mariazeller Salza) is an eastern tributary of the Enns. It originates on the mountain in Lower Austria and flows South of Mariazell through the Styrian nature preserve . After, it flows into the Enns near (part of Landl). Its drainage basin is .[1]
Below the municipality of (belongs to Mariazell) is the, a weir (stone dam) used for timber rafting in 1848. Today the water of the reservoir is used to power a small electric power plant. Downstream from the reservoir, the Salza is a favorite site for kayakers.
Numerous springs of small tributaries of the Salza have been captured and are used for the Viennese water supply.