Monoclonal antibodies (mAbs), antigen binding fragments and engineered antibody domains (eAds) that specifically bind IGF-II are disclosed herein. In some embodiments, these mAbs and eAds are included in a bispecific mAb. In some embodiments, the bispecific antibody specifically binds two different epitopes of IGF-II. Methods of using these mAbs, antigen binding fragments, and eAds, bispecific antibodies, and nucleic acids encoding these mAbs, antigen binding fragments, and eAds, bispecific antibodies are also disclosed.
