Saltfjorden or Saltenfjorden is a fjord in the municipalities of Bodø and Gildeskål in Nordland county, Norway. The 40-kilometre (25 mi) long fjord begins around the Fleinvær islands; travels northeast past Sørarnøy, Sandhornøya, and Straumøya islands; along the southern shores of the town of Bodø; and ends at the village of Løding.

The narrow Saltstraumen strait connects the Saltfjorden to the large, inland Skjerstadfjorden. The strait has a very strong tidal current, making travel difficult and dangerous.