This list of longest tunnels ranks tunnels that are at least long. Only continuous tunnels are included. Pipelines, even those that are buried, are excluded. The longest tunnels have been constructed for water distribution, followed by tunnels for railways.
World's longest tunnels (in use)
World's longest tunnels (under construction)
World's longest tunnels (advanced planning stage)
World's longest tunnels (abandoned)
See also
List of long tunnels by type – contains separate tables for railroad, subway, vehicular, bicycle, water/aqueducts, and also for different building techniques List of deepest caves List of deepest mines Lists of tunnels List of longest railway tunnels List of long railway tunnels in China List of longest subway tunnel sections List of longest bridges