Ruiu was a Nubian official at the beginning of the 18th Dynasty. He was chief of Teh-khet and was, therefore, a governor ruling a region in Lower Nubia for the Egyptian state. In the New Kingdom, Egyptian kings had conquered Lower Nubia. To secure control over the new region they appointed people of the local elite as governors. Teh-khet was a Nubian region that covered about Debeira and Serra. The local governors here formed a family, while the governor proper hold the title chief of Teh-khet.
Ruiu is mainly known from monuments of his children. The only own monument is a stela that was bought on Elephantine and that is today in the Pushkin Museum in Moscow. The stela is dedicated by Ruiu to his parents, his father Teti Djawia and his mother Ahhotep.
Otherwise, Ruiu is mainly known from the inscriptions of his sons Djehutyhotep and Amenemhat. They also became chief of Teh-khet. In their inscriptions, they often mention that they were begotten of Ruiu.  Ruiu was the brother of a certain official called Senmose who had a decorated tomb chapel at Qubbet el-Hawa. It is, therefore, possible to reconstruct a family of local, Nubian officials whose family members were in charge over three generations.
- V. Davies: Statuette of Amenemhat, in: D. Welsby, J. Anderson (editors): Sudan, Ancient Treasures, London 2004, British Museum Press, ISBN 0714119601, pp. 104-105, no. 78
- Torgny Säve-Söderbergh: New Kingdom Pharaonic Sites, The Finds and the Sites, The Scandinavian Joint Expedition to Sudaneses Nubia, Volume 5:2, Uppsala 1991, ISBN 9170810303, pp. 191-192, Fig. 47, A3
- Säve-Söderbergh: New Kingdom Pharaonic Sites, The Finds and the Sites, pp. 204-206
- Säve-Söderbergh: New Kingdom Pharaonic Sites, The Finds and the Sites, pp. 191