Constantine II of Scotland

Constantine II ( Causantín mac AEDA; * around 874, † 952 in St Andrews ) was Scottish king 900-942 or 943 He was the son of King Aedh, cousin of his predecessor, Donald II and uncle of his successor Malcolm I. Constantine had the second longest tenure of all Scottish kings and abdicated to live as a monk.

In the year 942 or 943 Constantine abdicated in favor of Malcolm I., and retired to a monastery in St Andrews, where he became abbot later. He died in 952 of natural causes and was probably buried at the monastery. His only surviving son Indulf two years later Scottish king.