List of public transport routes numbered 9
# List of public transport routes numbered 9

In public transport, Route 9 may refer to:

## Spain

* Barcelona Metro line 9
* Line 9 (Madrid Metro)

## United Kingdom

* London Buses route 9

## United States

* 9 (New York City Subway service)
* 9 - Mayfield (Cleveland RTA), a bus route in Cleveland
* Route 9 (MTA Maryland), a bus route in the suburbs of Baltimore, Maryland
