Helianthus is a genus of plants comprising sunflowers.
Helianthus may also refer to:
USS Helianthus (SP-585), U.S. Navy patrol boat Helianthus III, a yacht listed on the National Register of Historic Places Heliaster helianthus, a species of starfish Stichodactyla helianthus, a species of sea anemone
See also Actinia helianthus (disambiguation) Sunflower (disambiguation)