List of high-speed railway lines

This article provides a list of operational and under construction (or approved) high-speed rail networks, listed by country or region. While the International Union of Railways defines high-speed rail as public transport by rail at speeds of at least 200 km/h for upgraded tracks and 250 km/h or faster for new tracks, this article lists all the systems and lines that support speeds over 200 km/h regardless of their statuses of upgraded or newly built.

Operational networks
The following table is an overview of high-speed rail in service and under construction by country, ranked by the amount in service. It shows all the high speed lines (speed of 200 km/h or over) in service. The list is based on UIC figures (International Union of Railways), updated with other sources.