W12
- Amangu language
- Cierva W.11 Air Horse
- Hansa-Brandenburg W.12
- Icosidodecahedron
- London Buses route W12
- McCormick W-12
- Mercedes W12
- Volkswagen Group W-12 engine
- Volkswagen W12
- W postcode area
- W12 engine
- W12 nuclear warhead
- West 12
- Woodland and scrub communities in the British National Vegetation Classification system