ETM may refer to:
ETM, a name given in Computer Science to the set of all Turing Machines which never reach an accepting state.
Encrypt-then-MAC Energy and Technology Museum, in Vilnius, Lithuania Entercom, an American broadcasting company Erythromycin in report-related contexts Estuarine turbidity maximum European Travel Monitor Ramon International Airport, in Israel
See also ETM+, an instrument on the Landsat 7 satellite