The Lloyd's building (sometimes known as the Inside-Out Building) is the home of the insurance institution Lloyd's of London. It is located on the former site of East India House in Lime Street, in London's main financial district, the City of London. The building is a leading example of radical Bowellism architecture in which the services for the building, such as ducts and lifts, are located on the exterior to maximise space in the interior.

Twenty-five years after completion in 1986, the building received Grade I listing in 2011; it was the youngest structure ever to obtain this status. It is said by Historic England to be "universally recognised as one of the key buildings of the modern epoch".

The current Lloyd's building (address 1 Lime Street) was designed by the architect company Richard Rogers and Partners (now Rogers Stirk Harbour + Partners) and built between 1978 and 1986. Bovis was the management contractor. Like the Pompidou Centre in Paris (designed by Renzo Piano and Rogers), the building was innovative in having its services such as staircases, lifts, ductwork, electrical power conduits and water pipes on the outside, leaving an uncluttered space inside. The 12 glass lifts were the first of their kind in the United Kingdom. Like the Pompidou Centre, the building was highly influenced by the work of Archigram in the 1950s and 1960s.

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