Isaiah of Gaza was a 5th-century Christian ascetic and monastic writer who lived in both Egypt and Palestine. Originally a monk in the desert of Scetes, he later moved to a mountain and eventually settled near Gaza, where he lived as a hermit until his death in 491. He is recognized for his spiritual guidance and his role in spreading Christian teachings within Palestine. His influential writings, which focused on monastic discipline, have been preserved through various translations and collections used by different Christian traditions.