L42 may refer to: * HMS Brocklesby (L42), an ex-coaster taken up from trade that served in World War I for the British Royal Navy * Lee–Enfield L42, a sniper rifle * Mitochondrial ribosomal protein L42, a human protein * Sako Model L42, a rifle * Spanish landing ship Pizarro (L42) * an engine in GM's Ecotec engine family * a version of the Chaika L-4 amphibian aircraft This disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article.