MMT may refer to:
Economics
Modern Monetary Theory, a branch of economic theory
Geography
4QMMT (or MMT), one of the Dead Sea Scrolls
Myanmar Time (UTC+06:30)
Mathematics
MacMahon's master theorem, a result in enumerative combinatorics and linear algebra
Technology
MMT (Eclipse), a software project Multimode manual transmission, in a motor vehicle MPEG media transport, a digital container standard
Science
Methylcyclopentadienyl manganese tricarbonyl, an organomanganese compound MMT Observatory, an astronomical observatory in Arizona, USA MMt, one million metric tons Montmorillonite, a clay
Music
Magical Mystery Tour, a record by the English rock band the Beatles
Television
Miyagi Television Broadcasting, a Japanese commercial broadcaster
Transportation
Marshalltown Municipal Transit, in Marshalltown, Iowa