The following rail lines are known as the Chicago Line:
- Conrail's Chicago Line, Chicago to Albany, now the following Norfolk Southern and CSX lines:
- Chicago Line (Norfolk Southern), Chicago to Cleveland
- Cleveland Terminal Subdivision (CSX), Cleveland
- Erie West Subdivision (CSX), Cleveland to Erie
- Lake Shore Subdivision (CSX), Erie to Buffalo
- Rochester Subdivision (CSX), Buffalo to Syracuse
- Mohawk Subdivision (CSX), Syracuse to Amsterdam
- part of the Selkirk Subdivision (CSX), Amsterdam to Hoffmans
- part of the Hudson Subdivision (CSX), Hoffmans to Albany