Port Nelson (Port Code:NZNSN), as its name suggests, is the main port area of Nelson, New Zealand. It lies to the northwest of Nelson city centre, to the north of Washington Valley, at the southern end of Nelson Haven. The harbour entrance lies at the southwestern end of Boulder Bank, immediately to the west of Port Nelson. Port Nelson covers a land area of 0.98 km². Nelson Marina, a marina owned by Nelson City Council, is located in the Port Nelson area.
The port is a major commercial and customs port and benefits from being a natural haven, sheltering behind Boulder Bank, a 13km natural breakwater which protects the harbour in all weather conditions. In addition to handling large quantities of bulk and break bulk cargo, the port is also used as a regular port of call for liner trades servicing Australia and Europe and many Asian destinations. Principal imports: Petroleum products, fertiliser, general cargo and motor vehicles. Principal exports: Apples, logs, sawn and processed timber, dairy products and fish. Dredging is required annually at Port Nelson to maintain publicized depths at berths, basins, channels and entrances in the port area. The Harbour Master should therefore be contacted for confirmation of latest depths.