TM2 or Tm2 may refer to:
- Soyuz TM-2, the spacecraft used to launch a long duration crew to the Soviet space station Mir
- Thermal Monitor 2, a computer central processing unit thermal control
- TM2, a Rolls-Royce Marine Olympus gas turbine
- Square terametre (Tm2), a multiple of the SI unit of surface area, the square metre
- Tm^2, a metric unit equal to a weber
- Twisted Metal 2, a 1996 video game
