HART

HART may refer to:


 * Halt All Racist Tours, New Zealand
 * Health Advisory and Recovery Team, a British antivaccine pressure group
 * Heterogeneous Aerial Reconnaissance Team
 * Highway Addressable Remote Transducer Protocol
 * Hillsboro Artists' Regional Theatre
 * Human Assisted Reproductive Technology
 * Hypervelocity Aircraft Rocket, Tactical

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.