55 Broadway is a Grade I listed building close to St James's Park in London. Upon completion, it was the tallest office block in London. In 1931, the building earned architect Charles Holden the RIBA London Architecture Medal. In 2020, it was announced that it will be converted to a luxury hotel.

Charles Henry Holden was an English architect best known for designing many London Underground stations during the 1920s and 1930s, the Underground Electric Railways Company of London's headquarters at 55 Broadway, for the University of London's Senate House and for Bristol Central Library. He created many war cemeteries in Belgium and northern France for the Imperial War Graves Commission.