Japanese submarine I-55 may refer to one of the following submarines of the Imperial Japanese Navy:
- Japanese submarine I-55 (1925), a Kaidai-type submarine; renamed I-155 in 1942; surrendered at Kure in 1945; scuttled in 1946
- Japanese submarine I-55 (1943), a Type C3 cargo submarine; sunk in 1944 by USS Gilmer and USS William C. Miller
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.