| Tunnel Name |
Country |
Length |
| Päijänne Water Tunnel |
Southern Finland, Finland |
120,000 m |
| Dahuofang Water Tunnel |
Liaoning Province, China |
85,320 m |
| Orange–Fish River Tunnel |
South Africa |
82,800 m |
| Bolmen Water Tunnel |
Sweden, Kronoberg/Scania |
82,000 m |
| Gotthard Base Tunnel |
Switzerland, Swiss Alps |
57,091 m |
| Seikan Tunnel |
Tsugaru Strait, Japan |
53,850 m |
| Channel Tunnel |
English Channel, United Kingdom/France |
50,450 m |
| Shanghai Subway: Line 7 |
Shanghai, China |
40,200 m |
| Quabbin Aqueduct |
Massachusetts, United States |
39,600 m |
| Shenzhen Subway: Luobao Line |
Shenzhen, China |
37,497 m |
| Shenzhen Subway: Shekou Line |
Shenzhen, China |
36,146 m |
| Shanghai Subway: Line 10 |
Shanghai, China |
36,000 m |
| Singapore: Circle Line |
Singapore, Singapore |
35,700 m |
| Seoul Subway: Line 6 |
Seoul, South Korea |
35,100 m |
| Lötschberg Base Tunnel |
Bernese Alps, Switzerland |
34,577 m |
| Guangzhou Subway: Line 2 |
Guangzhou, China |
32,000 m |
| Beijing Subway: Line 1 |
Beijing, China |
31,040 m |
| Beijing Subway: Line 4 |
Beijing, China |
30,950 m |
| Guangzhou Subway: Line 5 |
Guangzhou, China |
29,900 m |
| Shanghai Subway: Line 8 |
Shanghai, China |
29,650 m |
| Evinos – Mornos Tunnel |
Aetolia-Acarnania, Greece |
29,400 m |
| Hultman Aqueduct |
Eastern Massachusetts, United States |
28,640 m |
| Daishimizu Tunnel |
Mount Tanigawa, Japan |
22,221 m |
| The London Connection |
London, England, United Kingdom |
20,000 m |