Moses the Hungarian was a monk of Hungarian origin who lived in Kievan Rus' during the turn of the 11th century. Born in Transylvania around 990, he eventually moved to Kiev to serve the princely family of Vladimir I. During his time in the capital, he witnessed the deaths of the princes Boris and Gleb. After being held as a prisoner in Poland following a military expedition in 1018, he returned to Kiev in 1025 to live out his remaining years as a monk.