AirTrain is the name of several passenger railway operations connecting airports to existing rapid transport systems and city centres:
- Airtrain Citylink, a railway infrastructure company in Brisbane, Australia
- Airport railway line, Brisbane, Australia
- AirTrain (San Francisco International Airport), serving San Francisco, California
- Operated by the Port Authority of New York and New Jersey:
- AirTrain JFK, serving New York City's John F. Kennedy International Airport
- AirTrain Newark, serving Newark Liberty International Airport in New Jersey
- AirTrain LaGuardia, a proposed service to New York City's LaGuardia Airport