North–South line may refer to any of several different railway and metro lines:

• North-South Line (KTM Intercity), the West Coast Line in Malaysia
• North–South MRT line, in Singapore
• North–South Line (Jakarta MRT), in Indonesia
• North/South line (Amsterdam metro), in the Netherlands
• NS Line, in Portland, Oregon, U.S.
• Red Line (MARTA) (formerly North–South line) in Georgia, U.S.
• South Line, Tasmania, sometimes the North–South Line, in Tasmania
• North–South Rail Link, in Boston, Massachusetts, U.S.
• North–South line (Saudi Arabia), in Saudi Arabia
• Sydney Metro Western Sydney Airport, Stage 1 of a proposed North South Rail Line, in Sydney, Australia
• North–South connection, in Brussels, Belgium
• North–South Junction, in Wellington, New Zealand

Namboku Line (南北線, Nanboku-sen, 'South North Line') may refer to any of several Japanese railway lines:

• Namboku Line (Osaka) (Kita–Osaka Kyuko Railway)
• Namboku Line (Kobe) (Kobe Rapid Railway)
• Namboku Line (Sapporo) (Sapporo Municipal Subway)
• Sendai Subway Namboku Line in Sendai
• Tokyo Metro Namboku Line in Tokyo

• North–South railway, in Germany
• North–South railway (Vietnam)
• North–South express railway, Vietnam
• North and South Railway, a failed planned American railroad
• North–South Commuter Railway, a planned commuter railway in the Philippines
• North–South Railway (Brazil)

• North–South Corridor (disambiguation)
• North–South Axis
• East–West line (disambiguation)
• Northeast Line (disambiguation)
• Central line (disambiguation)

This disambiguation page lists articles associated with the title North–South line.
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