The Heart Rhythm Society (HRS) has developed expert consensus documents that have guided clinical care in the management of cardiac arrhythmias since 1996. This HRSled expert consensus statement was developed in collaboration with the American College of Cardiology (ACC), the American College of Obstetricians and Gynecologists (ACOG), the American Heart Association (AHA), the Asia Pacific Heart Rhythm Society (APHRS), the European Heart Rhythm Association (EHRA), the Latin American Heart Rhythm Society (LAHRS), the Pediatric and Congenital Electrophysiology Society (PACES), and the Society for Maternal-Fetal Medicine (SMFM). This clinical practice document is intended to provide comprehensive guidance to cardiac electrophysiologists, cardiologists, and other health care professionals on the management of cardiac arrhythmias in pregnant patients, including arrhythmias that occur in the mother and in the fetus.