In public transport, Route 6 may refer to:
Route 6 (MTA Maryland), a bus route in Baltimore, Maryland Barcelona Metro line 6 London Buses route 6 Line 6 (Madrid Metro) Melbourne tram route 6 6 (New York City Subway service) Seoul Subway Line 6 6 Haight/Parnassus, a bus route in San Francisco Shanghai Metro Line 6
See also Line 6 (disambiguation)