9L or 9-L can refer to:
NY-9L, abbreviation for New York State Route 9L AIM-9L, a model of AIM-9 Sidewinder AirTanker Services (IATA code 9L, formerly used by Colgan Air) 9L 3407, code for Colgan Air Flight 3407 Kappa 9L, a model of Kappa (rocket) GCR Class 9L, a class of British 4-4-2T steam locomotive
See also L9 (disambiguation)