Formosum may refer to:

Animals Anthidium formosum Aplidium formosum Carenum formosum Dorcadion formosum Habrocestum formosum Idiosoma formosum Trochalopteron formosum Nealcidion formosum

Plants Adiantum formosum Anthurium formosum Bulbophyllum formosum Cratoxylum formosum Dendrobium formosum Entoloma formosum Gastrolobium formosum Genoplesium formosum Leucospermum formosum Polytrichastrum formosum Platylobium formosum Vaccinium formosum Rosenbergiodendron formosum

See also Formosa Taiwanica Taiwania Taiwaniana