Three ships of the Royal Navy have borne the name HMS Moorhen, after the moorhen, a water bird:
was a composite screw gunboat launched in 1875 and sold in 1888. HMS Moorhen was a composite paddle vessel launched in 1880 as . She was renamed HMS Cockatrice in 1881, and HMS Moorhen in 1896. She was sold in 1899. was a river gunboat launched in 1901 and sold in 1933.