Goronwy ap Tudur Hen (died 1331), also known as Goronwy ap Tudur or Goronwy Fychan, was a Welsh aristocrat and Lord of Penmynydd. He was a member of the Tudor family of Penmynydd, Anglesey, North Wales, and a direct ancestor of Owen Tudor and thereby the Royal House of Tudor. He was a soldier for the English crown, who fought in the First War of Scottish Independence, including in the English invasion which led to the Battle of Bannockburn. He remained loyal to King Edward II of England until the king's death, and was both a yeoman and forester of Snowdon. After his death in 1331, his body was interred in Llanfaes Friary, near Bangor, Gwynedd.