The Japanese Coastal Defense Gun near Songsong on Rota in the Northern Marianas Islands, is a historic site that is listed on the U.S. National Register of Historic Places.

The gun emplacement was built by the Japanese military in 1941.

[1] The gun included is a Japanese 140 millimeter coastal defense gun of Model 3 type.

It is placed in a camouflaged, reinforced concrete casemate within the cliff overlooking the entrance to Rota's East Harbor.

The defense gun itself was manufactured in Japan in 1925, and is bolted into place.