Line 12

Line 12 may refer to:

Asia

• Line 12 (Beijing Subway), China
• Line 12 (Dalian Metro), China
• Line 12 (Guangzhou Metro), China
• Line 12 (Shanghai Metro), China
• Line 12 (Shenzhen Metro), China
• Line 12 (Mumbai Metro), India
• Putrajaya line, or Line 12, Malaysia
• Toei Ōedo Line, originally Line 12, Tokyo, Japan

Europe

• Line 12 (Barcelona Metro), a shuttle train on the Barcelona–Vallès Line, Spain
• Line 12 (Madrid Metro), Spain
• Line 12 (Moscow Metro), Russia
• Paris Métro Line 12, France
• S12 (ZVV), Zurich, Switzerland

North America

• 12 (BMT rapid transit service), New York City, US (defunct)
• Mexico City Metro Line 12, Mexico

South America

• Line 12 (CPTM), São Paulo, Brazil