Telemedicine is an increasingly well-established area of health care that uses information technology to provide remote consultation and health support to patients. Most recently, it is of particular importance due to the COVID-19 pandemic. Notably, technological developments have allowed this form of health care provision to increase in scope and diversify the support provided to patients. Such broadening of scope and diversification of health care provision is particularly prominent in cardiology. It includes primary and secondary teleconsultations, remote monitoring of cardiological (including geriatric) patients by recording and monitoring electrocardiogram records, monitoring cardiac implantable electronic devices, telerehabilitation and tele-education. Moreover, in cardiology, telemedicine provides patients with feasible access to health care professionals while potentially reducing the cost to the health care providers. This article presents a critical evaluation of current applications of telemedicine in cardiology based on the literature. It highlights the advantages, disadvantages and inequalities of this form of cardiological healthcare provision.