The Old Market Square is an open, pedestrianised city square in Nottingham, England. It is the largest such surviving square in the United Kingdom, forming the heart of the city, and covering an area of approximately 22,000 m².
Located in the heart of Nottingham City Centre, the square is bounded by Beastmarket Hill to the West, Smithy Row to the North, and South Parade to the South. The Eastern end of the square is dominated by the Council House, which serves as Nottingham's city hall.
The nature of the square means it is often used for large local events, fairs, concerts and exhibitions.