Ardimentoso has been borne by at least two ships of the Italian Navy and may refer to:
- Italian torpedo boat Ardimentoso (1919), previously the German destroyer S63 awarded to Italy as war reparations by the Treaty of Versailles.
- Italian torpedo boat Ardimentoso (1942), a Ciclone-class torpedo boat launched in 1942 and transferred to Russia under the designation Z 19 in 1949.