干船坞（或称干坞）指在岸边以人工建设的船坞，作为建造、改装和修理船舶的地方。可以分为干旱船坞（岸上）或浮水船坞等不同类别。

A dry dock (sometimes dry-dock or drydock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, and repair of ships, boats, and other water craft.