The Atlantic Trading Estate is an industrial estate in Barry, Vale of Glamorgan, south Wales, UK. It is situated near the mouth of the Cadoxton River where it flows into Barry Docks in the southwestern part of Palmerston, although as it is accessed from the main road from the village of Sully, it is sometimes considered to be in Sully. It covers an area of 9.22 acres (3.73 ha).
Archaeological excavation at the estate determined it had been used as a "prehistoric settlement and early Christian burial site". There was evidence of a Bronze Age settlement, as well as small, unenclosed inhumation cemeteries dating from the late-Roman through post-Roman periods.
The estate was a Supply Reserve Depot prior to becoming a trading estate. In 1971, the Official Report of the Standing Committees delivered to Parliament referred to "a new project called the Atlantic Trading Estate, on the seaboard near Barry", stating that "there are a considerable number of new undertakings, and it is creating a significant, though relatively small, amount of employment". In November 2001, APC Panels sought permission to build a new factory and office development at the Atlantic Trading Estate.
The estate, in a deprived area of the town, has long been the target of arson and vandalism. In April 2006, a fire broke out in the Arcade Buildings, a block of industrial units on the Atlantic Trading Estate. In February 2007, car was set on fire, and in September, a lorry trailer containing rubbish and tyres was set ablaze in a suspected arson attack. In mid April 2008, a major fire broke out on the estate, affecting a derelict industrial unit housing, a warehouse and several garages. Several months later two men were arrested on the estate, suspected of dismantling metal girders and guilty of arson.
In January 2007, it was announced that a household waste recycling centre was planned at the Atlantic Trading Estate for the "recycling of glass, aluminium, plastic, battery boxes, fluorescent tubes, gas, oil, white goods and other waste". Oil recycling tank facilities were added to the centre in 2011. In 2014 it was reported that MDA Renewables Ltd plans on building a 25-metre-high 100 kW turbine on the southern boundary of the estate, declaring: "The proposed development will create a sustainable and renewable form of energy which will assist in meeting the Welsh Government's objectives in terms of reducing carbon emissions and minimising the causes of climate change."