Elias George Basevi FRS was a British architect who worked in both Neoclassical and Gothic Revival styles. A pupil of Sir John Soane, his designs included Belgrave Square in London, and the Fitzwilliam Museum in Cambridge. He was surveyor to the Guardian Assurance Company, to the Trustees of Smith's Charity and to the Thurloe estate.

Belgrave Square is a large 19th-century garden square in London. It is the centrepiece of Belgravia, and its architecture resembles the original scheme of property contractor Thomas Cubitt who engaged George Basevi for all of the terraces for the 2nd Earl Grosvenor, later the 1st Marquess of Westminster, in the 1820s. Most of the houses were occupied by 1840. The square takes its name from one of the Duke of Westminster's subsidiary titles, Viscount Belgrave. The village and former manor house of Belgrave, Cheshire, were among the rural landholdings associated with the main home and gardens of the senior branch of the family, Eaton Hall. Today, many embassies occupy buildings on all four sides.