Three ships of the Royal Navy have borne the name HMS St Jacob, after Saint Jacob:
- HMS St Jacob (1666) was a 4-gun fireship captured in 1666 and sold in 1667.
- HMS St Jacob (1667) was a 4-gun fireship purchased in 1667 and expended that same year.
- HMS St Jacob (1672) was a 6-gun dogger captured in 1672 and sold in 1674.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.