Ectopic thyroid tissue within the heart is exceedingly rare. Here, we report two unique cases diagnosed by echocardiography and confirmed pathologically. Case 1 involved ectopic thyroid tissue located in lower part of right ventricle, and Case 2 presented with thyroid tissue attached via a pedicle to the trabeculae of the left ventricular apex, the latter representing the first such documented case. Multimodal echocardiographic imaging techniques provided critical anatomical and spatial relationship details, guiding clinical decision-making.