SS-42

SS-42, SS 42 or SS42 may refer to:


 * BAP Abtao (SS-42), a submarine of the Peruvian Navy [[Image:Flag of Peru.svg|20px]]
 * SS 42 the road through the Mendelpass in Italy
 * USS L-3 (SS-42), a submarine of the United States Navy which saw service during World War I [[Image:Flag of the United States.svg|border|20px]]
 * USS S-42 (SS-153), a submarine of the United States Navy which saw service during World War I [[Image:Flag of the United States.svg|20px]]