Four ships of the Royal Navy have been named HMS Bacchus, after the Greco-Roman deity Bacchus:

was a 10-gun built in Bermuda in 1806 and captured in 1807. was a Dutch 10-gun schooner launched c.1806, that the Royal Navy captured in 1807, took into service in 1808, and broke up in 1812. was an 18-gun launched in 1813 and expended as a breakwater in 1829. was a 46-gun fifth rate launched in 1817, and renamed HMS Bacchus in 1844 upon her conversion into a hulk; she was broken up in 1883.

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