HDMS Fylla was a Danish gunboat, launched in 1862.

Fylla was built entirely in wood, rigged as a topsail schooner and equipped with a steam-driven propeller.

[1] Fylla's first voyage was to the Danish West Indies in 1863, but she was called back in 1864 because of the second Schleswig war.

During most of her career Fylla served as inspection ship and coast guard around the Faroes, Iceland and Greenland, but also as fisheries inspection ship in the North Sea in 1880-81.

Major repairs and rearmament with more, but smaller cannons, in 1881-82.