Severe valvular heart disease (VHD) is uncommon but becomes more prevalent with age, particularly in those over 75 years. While transthoracic echocardiography (TTE) remains the primary imaging modality, cardiac magnetic resonance (CMR) is increasingly used for evaluating congenital and acquired VHD, especially when echocardiography is suboptimal or additional details are required. This chapter reviews the role of CMR in assessing VHD, including its ability to evaluate valve morphology, stenosis, regurgitation, and myocardial impact. CMR sequences like flow-sensitive 2D and 4D flow MRI, as well as cineangiography (CINE), allow precise measurements of valve function and anatomy. The chapter also explores CMR’s application in congenital conditions such as bicuspid aortic valve and Ebstein anomaly, and its role in quantifying severity in acquired valve diseases like aortic, mitral, pulmonary, and tricuspid valve disease. Furthermore, CMR plays a crucial role in pre-procedural planning for transcatheter valve replacements, offering an alternative to contrast-enhanced computed tomography (CCT) in certain cases. Overall, CMR provides valuable, detailed insights into VHD, enhancing diagnosis and guiding treatment.