ET (or et or &) is Latin and French for "and". It may also refer to:

ET:

• Eastern Time, both in standard and daylight time
• Effective temperature
• ET - Andrew Ettingshausen - former Cronulla Sharks, NSW and Australian Rugby League player.
• Elapsed time or end time
• Electron transfer
• Electronics Technician, a rating in the United States Navy
• Engineering technology
• Enterostomal therapy
• Entertainment Tonight
• Equal temperament
• Essential tremor
• E.T. the Extra-Terrestrial, the 1982 film
• E.T. (game), a 1983 video game based on the movie
• ET (Extra-Terrestrial), a song by OutKast on the album ATLiens
• Ethiopia, country code
• Ethiopian Airlines, IATA airline designator
• Ethyl
• Evapotranspiration
• Exatesla, an SI unit of magnetic flux density
• Space Shuttle external tank
• extraterrestrials in general
• Extra time, especially relating to Football (soccer) matches
• Tundra climate, in Köppen climate classification
• Enemy Territory, the video game

et:

• Estonian language (ISO 639 alpha-2 language code)
• Ethiopia, the Internet country code top-level domain (ccTLD)
• Slang for 'it,' developed in Northern California's Persian community.

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