Ferguson Marine Limited is a shipbuilding company whose yard, located in Port Glasgow on the Firth of Clyde in Scotland, was established in 1903. It is the last remaining shipbuilder on the lower Clyde and is currently the only builder of merchant ships on the river. For some years the company's mainstay has been Roll-on/roll-off ferries, primarily for Caledonian MacBrayne (CalMac), including a series of innovative hybrid diesel-electric/battery-powered vessels. Beset with difficulties since 2018 over their latest two CalMac ferries, Fergusons' largest ever vessel, the shipyard was nationalised in December 2019. It is now classified as an executive non-departmental public body of the Scottish Government.