Broadwick Street (formerly Broad Street) is a street in Soho, central London. It runs approximately west-east between Marshall Street and Wardour Street, crossing Berwick Street.

Broad Street was notorious as the centre of an 1854 outbreak of cholera. Dr John Snow traced the outbreak to a public water pump on the street and disabled the pump, ending the outbreak. Before this time, the disease was widely thought to be caused by air-borne miasma; Snow's findings showed it be water-borne.

A replica pump, together with an explanatory plaque, was erected in 1992 close to the original location. The original pump was sited at the junction of Broad Street and Cambridge Street (today Lexington Street), close to the back wall of what today is the John Snow pub.