Flavius Zeno (c. 425 -491), original name Tarasicodissa or Trascalissaeus, Eastern Roman Emperor (February 9 474 - April 9 491) was one of the more prominent of the early Byzantine emperors. Domestic revolts and religious dissension plagued his reign which nevertheless succeeded to some extent in foreign issues. He presided over the official end of the Roman Empire in the west under Julius Nepos and Romulus Augustus, while at the same time contributing much to stabilizing the empire in the east.
Zeno is a lunar impact crater located near the northwest limb of the Moon. It lies to the east-southeast of Mercurius crater. Further to the east of Zeno, along the limb, is the well-formed Boss crater.