Which lines are JR lines?

Hi there,

We have a map here with all lines included:
https://www.jrpass.com/map

Usually the the line with have JR in front, like JR Yamanote line or JR Chuo line. As we're not JR East, I can't comment on why it is included, likely to show possible connections for travellers.

You can also use Hyperdia to find lines only covered by the JR Pass.