Italian submarine Balilla may refer to one of the following Italian submarines:
- Balilla (1915) was the former German U-42, acquired in 1915 by the Regia Marina and sunk in July 1916.
- Balilla (1927) was the lead boat of the Balilla-class submarines, built in 1927 and laid up in 1941.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.