Haymarket may refer to: Haymarket affair, 1886 incident in Chicago, Illinois Haymarket Theatre, theatre in London Haymarket Centre, shopping centre in Leicester Haymarket Theatre (Leicester), theatre in Leicester, above Haymarket Group, magazine publishing firm Haymarket Books, non-profit publisher of left-wing literature in the United States Haymarket may also refer to one of the following places:Australia Haymarket, New South Wales, area of Sydney, Australia United Kingdom Haymarket (Lon… (More on Haymarket)