ART's a three-letter acronym that can mean: Medicine Antiretroviral therapy. It's used in the treatment of HIV infection. assisted reproductive technology Androgen Replacement Therapy Acronyms and definitions The National Rail code for Arrochar and Tarbet railway station, United Kingdom. External links: ; ; . ART image file format Argentina Time Adaptive resonance theory Advanced Rapid Transit metro technology Watertown International Airport (IATA airport code: ART) ISO 639 alpha-3 co… (More on Art)