HART may refer to:

Transportation

• Hillsborough Area Regional Transit, Florida

• Honolulu Authority for Rapid Transportation, Hawaiʻi

• Housatonic Area Regional Transit, Connecticut

• Huntington Area Rapid Transit, Long Island, New York

Response or rescue teams

• Hazardous area response team, UK

• High Acuity Response Team, a type of Rapid response team (medicine)

Science and technology

• HART Communications Protocol (Highway Addressable Remote Transducer) - a communication protocol used in the process industries.

• Human Assisted Reproductive Technology

• Hypervelocity Aircraft Rocket, Tactical

Other uses

• Halt All Racist Tours, New Zealand

• Health Advisory and Recovery Team, a British antivaccine pressure group

• Heterogeneous Aerial Reconnaissance Team

• Hillsboro Artists' Regional Theatre

See also

• Highly active antiretroviral therapy (HAART), a treatment for HIV

• Hart (disambiguation)