Moly may refer to:
Moly (herb), a magic herb in Greek mythology Allium moly, a flowering plant Molybdenum (Mo), a chemical element Molybdenum disulfide (), referred to as "moly" when used as a dry lubricant, or added to grease or oil
See also Chromoly, a steel chromium and molybdenum alloy Moli (disambiguation) Molly (disambiguation)