The Ninian Central Platform is an oil platform in the North Sea operated by CNR. When constructed in 1978 the 600,000 tonne platform was the world's largest man-made movable object before being towed to its current position and fixed to the sea floor.

It is a circular concrete gravity structure, 140 m in diameter at its base, with seven concentric walls of stepped heights intersected by radial walls at 45-degree angles. A 14 m wide central shaft is surrounded by a breakwater wall ("Jarlin Wall") 45 m in diameter and 1.6 m thick pierced with 1.5m diameter holes. Between these two walls drill slots are arranged for drilling up to 42 wells.