Anna of Kashin was a 14th-century Russian princess and nun who served as the consort of Mikhail of Tver. Born in Rostov Veliky around 1280, she experienced significant personal tragedy, including the loss of her husband and several children to violence and conflict. Following the death of her husband, she entered monastic life, eventually moving to Kashin where she lived as a nun. She is recognized as a saint and serves as a patroness for both Kashin and Tver.