MTE
The abbreviation MTE or M.T.E. may refer to:

 The Metabolic Theory of Ecology, which argues that ecological phenomena result from metabolic constraints
 The Brazilian Ministry of Labor and Employment
 MCA Television Entertainment, a former division of Universal Television
Materiel de Traction Electrique joint subsidiary of Creusot-Loire and Jeumont-Schneider
MAC-then-Encrypt (MtE), one of approaches to Authenticated encryption
Mathematical Table Errata, an increasingly numbered periodical column about errors in mathematical tables in the journal Mathematics of Computation