ETR
# ETR

ETR may refer to:

## Transportation

* ElettroTreno, a series of Italian high-speed trains
* Echigo Tokimeki Railway, a railway operating company in Japan
* Santa Rosa International Airport, serving Machala, Ecuador
* Essex Terminal Railway, a short line railroad in Canada

## Other

* Second East Turkestan Republic
* Express Toll Route, in Canada; Ontario Highway 407
* Entergy Corporation; NYSE stock symbol
* Edolo language; ISO language code
* Etravirine, a drug used to suppress HIV replication
