Broadwick Street (formerly Broad Street) is a street in Soho, City of Westminster, London. It runs for 0.18 miles (0.29 km) approximately west–east between Marshall Street and Wardour Street, crossing Berwick Street. The street extends across four separate estates, Colman Hedge Close, Little Gelding's, Pawlett's Garden and Pesthouse.
Broad Street was notorious as the centre of an 1854 outbreak of cholera. This outbreak killed a total of 700 people and only twelve escaped. Physician John Snow traced the outbreak to a public water pump on the street, and disabled the pump. Before this time, the disease was widely thought to be caused by air-borne 'miasma'; Snow's findings showed it to be water-borne.