MML can stand for:
Academia Master of Modern Languages, an undergraduate degree offered by the University of Manchester, which includes the study of two modern languages to Master's level Medieval and Modern Languages, an undergraduate degree offered by the Faculty of Medieval and Modern Languages, University of Oxford (FMML) Modern and Medieval Languages, an undergraduate degree offered by (and the corresponding faculty at) the University of Cambridge
Computer programming Medical Markup Language, an application of Extensible Markup Language (XML) MML (language), man-machine language, a computer language Modeling Maturity Level, a scale to indicate to which degree an architecture uses models (used in software development) Music Macro Language, a music notation format used in producing music for personal computers and video game systems Music Markup Language, an application of Extensible Markup Language (XML) An abbreviation for the voice over IP application Mumble, primarily designed for use by Scottermac (mml)
Forums, organizations, or companies Maskew Miller Longman, a South African publishing company owned by Maskew Miller Learning. Michigan Municipal League, a non-profit organization representing Michigan cities, villages and urban townships MML Capital Partners an international investment company Material Measurement Laboratory, a NIST laboratory since 2010 Milli Muslim League, now the Pakistan Markazi Muslim League (PMML), an Islamist political party in Pakistan, front for the militant group Lashkar-e-Taiba
Mathematics 2050 in Roman numerals Minimum Message Length, a form of unbiased statistical modeling based on information theory MyMathLab, an online education platform, developed by Pearson Education, for teaching and learning mathematics
Transportation The IATA airport code for Southwest Minnesota Regional Airport The Midland Main Line, a main line railway in the United Kingdom Midland Mainline (train operating company), a former train operating company that operated the Midland Main Line franchise. Midland Line (disambiguation), for other uses
Others Myeloid/lymphoid or mixed-lineage leukemia Multi-Mission Launcher, an American missile launcher Middlesbrough Music Live, a music festival in Middlesbrough, England Metropolitan Municipality of Lima (), the government institution in charge of the metropolitan area of Lima, Peru "MML", level from PlayStation 3 video game Haze Mega Man Legends, a videogame series part of the Mega Man franchise.