Crossrail is a railway line under construction in London and its environs. It is expected to begin full operation in 2019 with a new east-west route across Greater London. Work began in 2009 on the central section of the line—a new tunnel through central London—and connections to existing lines that will become part of Crossrail. It is one of Europe's largest railway and infrastructure construction projects.

Crossrail is a railway line across London, currently under construction.