Idwal Foel (died c. 942) or Idwal ab Anarawd (Idwal son of Anarawd) was a 10th century King of Gwynedd in Wales. A member of the House of Aberffraw, he inherited the throne from his father, Anarawd ap Rhodri. William of Malmesbury credited him as "King of the Britons" in the manner of his father.[1]