Theodora of Sihla was a 17th-century Christian nun and ascetic who lived in the mountains of the Principality of Moldavia. Born into a noble family in the Vânători-Neamț region, she eventually renounced her marriage to pursue a monastic life. Following periods of instability caused by foreign invasions, she sought solitude in the wilderness, eventually living as an anchorite in the remote, forested area known as Sihla. She is recognized as a saint in the Orthodox tradition for her dedicated life of prayer and seclusion.