W6

W6 may refer to:

• W6 (tram), a class of electric trams built by the Melbourne & Metropolitan Tramways Board.
• a particular width for a structural steel I-beam
• a postcode district in the W postcode area
• Wizz Air (IATA code W6)
• 7th step of the W0-W6 scale for the classification of meteorites by weathering
• W6 (loading gauge) on the British rail network
• Weltmeister W6, a Chinese car

See also

• 6W (disambiguation)