Martes americana (American Marten) is reported to eat a diverse diet, including mammals, invertebrates, and plants. Despite this variety, we found no reference to tree sap in its diet. Here, we describe two separate incidents of an American Marten feeding on sap from active sap wells made by Sphyrapicus varius L. (Yellow-bellied Sapsucker). To our knowledge, these are the first recorded observations of martens feeding on sap from sap wells.