Masuna or Massonas was a Berber from what is now western Algeria who was said to have been a Christian, he ruled the Mauro-Roman Kingdom with its capital based in Altava which is now in present-day Algeria around the Tlemcen area. He was able to maintain the independence of his kingdom by resisting occupation from the Vandals. King Masuna allied with the Eastern Roman Emperor Justinian and assisted him in a war against the Vandals in 533 and also against other invading Berber tribal confederations. During his reign he was obeyed by the tribes of Mauretania.

Mauretania is the Latin name for a region in the ancient Maghreb. It extended from central present-day Algeria to the Atlantic, encompassing northern present-day Morocco, and from the Mediterranean in the north to the Atlas Mountains. Its native inhabitants, of Berber ancestry, were known to the Romans as the Mauri and the Masaesyli.