Sir Aron ap Rhys (born ca. 1140) was a nobleman from Wales.[1]
He married Gwenllian ferch Ednyfed Fychan, daughter of Ednyfed Fychan, and was the father of Father of Efa ferch Aron; Jonet Verch Aron och Bleddri ap Sir Aron. He became a Knight of the Holy Sepulchre.