Owain ab Edwin of Tegeingl or Owain Fradwr (Welsh: "the Traitor"; ? – 1105) was lord of the cantref of Tegeingl in north-east Wales at the end of the 11th century. He was the son of Edwin of Tegeingl. He sided with the Normans in their failed invasion of North Wales, and in the 1090s attempted to become ruler of Gwynedd. His arms were gules three men's legs conjoined at the thighs in triangle argent.