Note: See Haymarket, Australia for the area of Sydney, Australia known as Haymarket.

See Haymarket, Virginia for the town by that name.

See Haymarket Riot for the United States union strike.

The Haymarket is a street in Westminister, London that runs from Piccadilly Circus to Trafalgar Square. It houses a number of high class restaurants, two major theatres (the Theatre Royal and Her Majesty's Theatre) and a cinema complex.

It is part of London's theatre district, the West End, and has been the location for a theater at least since the 17th century, when it housed one of the theatres that G. F. Handel staged his operas in.

The Haymarket runs parallel to Regent Street.