Harðar saga ok Hólmverja or Harðar saga og Hólmverja is one of the sagas of Icelanders. It is preserved in two medieval, vellum manuscripts, Reykjavík, Stofnun Árna Magnússonar, AM 556a 4to ff. 70r-88r, and the fragment AM 564a, 4to, f. 7. Wikipedia