Artificial intelligence is the branch of computer science that deals with the problem of building agents that choose the best possible course of action in a given situation. Cardiology is at the forefront of the artificial intelligence revolution in medicine. AI enables accurate prediction of cardiovascular outcomes, non-invasive diagnosis of coronary artery disease, detection of malignant arrhythmias, and prediction of diagnosis, treatment, and outcome for heart failure patients. Advances in artificial intelligence, the Internet of Things, and precision medicine will lead to future innovations in cardiovascular research. Artificial intelligence in cardiology is constrained by unaddressed ethical and privacy concerns. Regulations will need to be implemented in the future for the safe use of artificial intelligence in cardiology and medicine.