The Grand Harbour (Maltese: il-Port il-Kbir; Italian: Porto Grande), also known as the Port of Valletta,[1] is a natural harbour on the island of Malta. It has been substantially modified over the years with extensive docks (Malta Dockyard), wharves, and fortifications.

The harbour mouth faces north-east and is bounded to the north by Saint Elmo Point and further sheltered by an isolated breakwater and is bounded to the south by Ricasoli Point. Its north-western shore is formed by the Sciberras peninsula, which is largely covered by the city of Valletta and its suburb Floriana. This peninsula also divides Grand Harbour from a second parallel natural harbour, Marsamxett Harbour. The main waterway of Grand Harbour continues inland almost to Marsa. The southeastern shore of the harbour is formed by a number of inlets and headlands, principally Rinella Creek, Kalkara Creek, Dockyard Creek, and French Creek, which are covered by Kalkara and the Three Cities: Cospicua, Vittoriosa, and Senglea. The harbour has been described as Malta's greatest geographic asset.

The Maltese islands have a long history, mainly due to their strategic location and natural harbours, mainly the Grand Harbour as well as Marsamxett. The Grand Harbour has been used since prehistoric times.

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