Line 12
- 12 (BMT rapid transit service)
- Line 12 (Barcelona Metro)
- Line 12 (Beijing Subway)
- Line 12 (CPTM)
- Line 12 (Dalian Metro)
- Line 12 (Guangzhou Metro)
- Line 12 (Madrid Metro)
- Line 12 (Moscow Metro)
- Line 12 (Mumbai Metro)
- Line 12 (Shanghai Metro)
- Line 12 (Shenzhen Metro)
- Mexico City Metro Line 12
- Paris Métro Line 12
- Putrajaya line
- S12 (ZVV)
- Toei Ōedo Line