Five ships of the Royal Navy have borne the name HMS Hecate, after Hecate, a goddess in early Greek mythology:
- was a 12-gun gunvessel launched in 1797 and sunk as a breakwater in 1809.
- was an 18-gun launched in 1809 and sold in 1817.
- was a 4-gun wooden paddle sloop launched in 1839, fitted out for survey work in 1860 and sold in 1865.
- was an iron screw breastwork monitor launched in 1871 and sold in 1903.
- was a launched in 1965. She was put up for disposal in 1991, and sailed to India to be broken up in 1994.