Treo may refer to:
Gillette Treo, a razor designed for caregivers to shave seniors and people with disabilities Jeep Treo, a 2003 electric concept car Palm Treo, a line of smartphones Total Rare Earth Oxides, a measurement of rare-earth oxides Treo (dog), recipient of the Dickin Medal Treo (drug), a painkiller
See also Trio (disambiguation)