L24 may refer to: Automobile engines Nissan L24 engine, a straight-six engine Saturn L24 engine, a straight-four engine Aviation Helio L-24 Courier, an American civil utility aircraft Paradise Skypark, an airport in Butte county, California Proteins 60S ribosomal protein L24 Mitochondrial ribosomal protein L24 Vessels , a submarine of the Royal Navy , a destroyer of the Royal Navy , an amphibious warfare vessel of the Indian Navy Lapworth 24, an American sailboat design