L6

L6 may refer to:


 * L6, a variety of low-alloy special purpose steel
 * Mauritania Airlines International (IATA code: L6, ICAO code: MAI)
 * Straight-6 engine
 * L6, Bell Telephone Laboratories' Low-Level Linked List Language
 * L6, instance of mathematical Lp space
 * L 6 (keelboat), class of sailboat
 * ISO/IEC 8859-10 (Latin-6), an 8-bit character encoding
 * Lower sixth (grade 12) in British secondary education

Products by model number
Aircraft:
 * Gibson L6-S guitar
 * Motorola SLVR L6 phone
 * PRR L6 locomotives
 * L6 Wombat firearm
 * Daimler D.I fighter
 * Interstate Cadet L-6A light passenger plane
 * Lucas L6, French light aircraft