Abstract: The present invention is directed to anti-AR antibodies, preferably humanized monoclonal antibodies having the amino acid sequences disclosed herein. The present invention includes a pharmaceutical composition comprising such antibodies. The present invention includes a method of inhibiting cancer cell growth comprising administering such antibodies into a subject. The present invention also provides a method of treating cancer or psoriasis in a subject in need of such a treatment by administering such antibodies to said subject in a pharmaceutically effective amount.