The Bramble-class gunboat was a type of warship used by the Royal Navy between the 1890s and the 1920s. The four ships of this class were notable as the final development of the Victorian gunboat tradition, and for being one of the last classes of warship designed to travel under sail. One of them, HMS Thistle, retained a functional sailing rig into the mid-1920s.

A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.