Blue Line (New York)
In the context of transit in New York state, the Blue Line may refer to:
- The Harlem Line of the Metro-North Railroad
- The Hoboken–33rd Street route of the PATH Train
- Any of the New York City Subway services that use the IND Eighth Avenue Line and its branches:
- A Eighth Avenue Express
- C Eighth Avenue Local
- E Eighth Avenue Local
- The former K Eighth Avenue Local
- The Rockaway Park Shuttle, which formerly contained a blue route bullet
- The Port Jefferson Branch of the Long Island Rail Road
The following services have a light blue color:
- The former JFK Express of the New York City Subway
- The future T Second Avenue Local of the New York City Subway
- The West Hempstead Branch of the Long Island Rail Road
- The Staten Island Railway