Castlegate is a street in Sheffield, England. It is now the main thoroughfare to and from the North of Sheffield as it links Park Square to Wicker. Castlegate, built along a portion of the River Don, was the old location of the slaughter houses. It also served as a back entrance to the Alexandra Opera House as well as the market quarter situated on the site of the former castle of Sheffield.
It currently houses the eponymous indoor markets, built in the 1960s to provide permanent accommodation to tradesmen and are projected to be moved to The Moor where new bespoke buildings will be built. The current location of the markets, situated along Castlegate, are subject to reconstruction although no solution has yet been approved.