The Serpentine Galleries are two contemporary art galleries in Kensington Gardens, Westminster, Greater London. Recently rebranded to just Serpentine, the organisation is split across Serpentine South, previously known as the Serpentine Gallery, and Serpentine North, previously known as the Sackler Gallery. The gallery spaces are within five minutes' walk of each other, linked by the bridge over the Serpentine Lake from which the galleries get their names. Their exhibitions, architecture, education and public programmes attract up to 1.2 million visitors a year. Admission to both galleries is free. The CEO is Bettina Korek, and the artistic director Hans Ulrich Obrist.

Kensington Gardens, once the private gardens of Kensington Palace, are among the Royal Parks of London. The gardens are shared by the City of Westminster and the Royal Borough of Kensington and Chelsea and sit immediately to the west of Hyde Park, in western central London known as the West End. The gardens cover an area of 107 hectares. The open spaces of Kensington Gardens, Hyde Park, Green Park, and St. James's Park together form an almost continuous "green lung" in the heart of London. Kensington Gardens are Grade I listed on the Register of Historic Parks and Gardens.