William Doxford & Sons Ltd, often referred to simply as Doxford, was a British shipbuilding and marine engineering company.

William Doxford founded the company in 1840.^[1] From 1870 it was based in Pallion, Sunderland, on the River Wear in Northeast England. The Company was managed by William Doxford's four sons following his death in 1882.^[1] It was acquired by Northumberland Shipbuilding Company in 1918.^[2]

It was renamed Doxford & Sunderland Shipbuilding & Engineering Co Ltd in 1961 and Doxford & Sunderland Ltd in 1966.^[1] Court Line took it over in 1972 and renamed it Sunderland Shipbuilders Ltd.^[1]

In the 1970s a new all-weather Pallion yard was built which could build two ships of up to 30,000 tons deadweight side-by-side. The steel came in at one end, and the completed ship left from the other with engines installed and sometimes with the machinery running.^[3]

Court Line collapsed in 1974 and the company was nationalised.^[1] It was privatised in 1986 when it was merged with Austin & Pickersgill to form North East Shipbuilders.^[1] However, the last ship built at Pallion was floated out of the yard in 1989 after which it closed as a shipbuilding yard. The old shipyard is now occupied by Pallion Engineering Limited, whilst the former marine engine works is occupied by W.H.Forster (Printers) Ltd.

Doxford was a major British shipbuilder. It also made marine diesel engines, the last of which it built in 1980.

• List of shipbuilders and shipyards
• Turret deck ship
• HMS Opal (1875)
• HMS Opal (1915)
• Badagry Palm (1979) – the last Doxford marine engine (J-Type)
• SS Waikato