TM or Tm and variants may refer to: * Trademark, often indicated with the symbol ™ ** Trademark symbol

Businesses and organizations

* TM Forum, telecommunications and entertainment industry association * TM Supermarket, a chain of supermarkets in Zimbabwe * LAM Mozambique Airlines (IATA airline designator TM) * Telekom Malaysia, telecommunications company * Texas Mexican Railway (reporting mark TM) * TM (cellular service), a telecommunications brand in the Philippines * Toastmasters International, an international public speaking organization * Toyota Motor Corporation (NYSE symbol TM) * Tokyo Metro, one of the major subway systems of Tokyo

Science and technology

Biology and medicine

* Melting temperature (T_m) in nucleic acid thermodynamics, at which half of DNA strands are in the ssDNA state * Transport maximum, where concentration increase does not speed membrane traversal * Transverse myelitis, a neurological condition in which the spinal cord is inflamed * Translational medicine * TM domain, a membrane-spanning protein domain

Computing

* .tm, the Internet domain code for Turkmenistan * Struct tm, calendar time type in the C and C++ programming languages * Traceability matrix, in software development * Translation memory * Turing machine, a hypothetical universal computing machine

Physics and chemistry

* Tm ligands, a tridentate ligand used in coordination chemistry * Melting point (abbreviated T_m), in physics and materials science * Thulium, symbol Tm, a chemical element * Transition metal * Transverse mode, Transverse magnetic modes, in optics and wave theory

Weapons

* TM 65 mine, a Finnish anti-tank mine * TM series of Soviet and Russian anti-tank mines ** TM-41 mine, a Soviet World War II mine ** TM-46 mine, a Soviet post-war mine ** TM-57 mine, a Soviet Cold War mine ** TM-62 series of mines, a series of Soviet Cold War blast mines ** TM-83 mine, a 1990s Russian mine ** TM-89 mine, a 1990s Russian mine

Other uses in science and technology

* Thematic Mapper, an Earth-observing sensor on a Landsat satellite * Terametre (Tm), equal to 10¹² metres * TM (triode) (from French ), standard small-signal vacuum tube of the Allies of World War I

Other uses

* ''Taskmaster (TV series), ''Taskmaster'' (TV series)'', a British TV comedy show adapted in several other countries. * Thames Measurement, a shipping tonnage measure * ''Their Majesties'', for multiple monarchs each styled "His/Her Majesty" * Torpedoman's mate, a former rank of the U.S. Navy * Transcendental Meditation, a specific form of mantra meditation * Trans-Manhattan Expressway, a highway in New York City * Turkmenistan (ISO country code TM) * TrackMania, a Nadeo game * TM (album), ''TM'' (album), an album by Brockhampton {{disambiguation