CART or CarT may refer to:

• Canada Agricultural Review Tribunal, a Canadian regulatory appellate tribunal
• Center for Advanced Research and Technology, a high school in Clovis, California
• Centre for Appropriate Rural Technology, South Africa
• Championship Auto Racing Teams, a now-defunct sanctioning body for American open-wheel car racing
• Christian African Relief Trust, a British aid organisation
• Coleshill Auxiliary Research Team, British historical research group
• Computer Analysis Response Team, a Federal Bureau of Investigation working group

• Chimeric antigen receptor T cell
• Classification and regression tree, a type of decision tree
• Cocaine- and amphetamine-regulated transcript, a neuropeptide
• Combination antiretroviral therapy, a type of treatment for HIV/AIDS
• Torulene dioxygenase, an enzyme

• Communication access real-time translation, a speech-to-text conversion system

• Clermont Area Rural Transit, now Clermont Transportation Connection
• Cleveland Area Rapid Transit

• CART, abbreviation for Churchie Art, an annual exhibition at Anglican Church Grammar School, Brisbane, Australia

• Cart (disambiguation)