Abstract: The present invention relates to CD160 binding molecules and nucleic acid sequences encoding such molecules. In particular embodiments, the present invention provides CD160 binding molecules (e.g., monoclonal antibodies or antibody fragments) with particular light chain and/or heavy chain CDRs (e.g., selected from SEQ ID NOS:2-4, 10-12, 6-8, and 14-16) and methods for using such molecules to treat an inflammatory disease, cancer, a chronic infection, and a refractory infection, or to determine whether cells with the CD160 surface receptor are present in certain tissues or cells being examined.