MCL may refer to: Medicine Mantle cell lymphoma Mast cell leukemia Medial collateral ligament Medical Center Leeuwarden Microlitre (μL), or microliter Midclavicular line Mucocutaneous leishmaniasis Multiple cutaneous leiomyoma Myeloid cell leukemia sequence 1 (MCL1) Companies and organizations MCL Cafeterias, a chain of American cafeteria-style restaurants Mahanadi Coalfields Limited, a coal-producing company in India Marine Corps League Movement for Christian Liberation Malabar Cements Limited a cement company in Kerala Mysore Cements Limited a cement company Law Michigan Compiled Laws Science, engineering and industry Maximum Contaminant Level Maximum Coupling Loss Mid-Canada Line of early-warning radar stations Computer Science and mathematics 1150 in Roman numerals Macintosh Common Lisp McLaughlin group (mathematics), a sporadic simple group Monte Carlo localization Multicollinearity Sport