The Regional Municipality of Sudbury was a regional municipality that existed in Ontario, Canada, from 1973 to 2000, and was primarily centred on the city of Sudbury. It served as an upper-tier level of municipal government, aggregating municipal services on a region-wide basis like the counties and regional municipalities of Southern Ontario, and was the only upper-tier municipal government ever created in Northern Ontario. The regional municipality was dissolved with the creation of the amalgamated city of Greater Sudbury on January 1, 2001.

This is a list of neighbourhoods in the urban core of Greater Sudbury, Ontario. This list includes only those neighbourhoods that fall within the pre-2001 city limits of Sudbury — for communities within the former suburban municipalities, see the articles Capreol, Nickel Centre, Onaping Falls, Rayside-Balfour, Valley East and Walden.