Salhusfjorden is a long fjord and sound between the municipalities of Bergen and Meland in Hordaland county, Norway. To the west, it starts between Salhus and Frekhaug, where the Byfjorden meets the Herdlefjorden. To the east, the fjord ends between Knarvik and Hordvikneset, where the Osterfjorden runs northeast, the Sørfjorden runs southeast, and the Radfjorden runs north. The fjord is up to deep. It acts as one of the borders between the districts of Midhordland to the south and Nordhordland to the north. The islands of Holsnøy and Flatøy lie along the northern side of the fjord.