Tannoy is a British manufacturer of loudspeakers founded in 1926 by the Yorkshire-born engineer Guy Fountain at a garage in Tulsemere Road, Dulwich in London as the Tulsemere Manufacturing Company.
It originally made battery chargers for wireless radio sets.
The company name was changed to Tannoy in 1928 and a small factory was opened in Dalton Road, West Norwood, later moving to Canterbury Grove.

During World War II Tannoy public address systems were supplied to the armed forces, and a Tannoy PA system was used at Buckingham Palace in 1945 to announce the end of hostilities.

Today the company is part of the Music Tribe group of brands.