Soviet submarine K-129 may refer to one or both of the following submarines of the Soviet Navy:
- Soviet submarine K-129 (1960), a Golf-class (Project 629) diesel-electric ballistic missile submarine that sank in March 1968; partially salvaged by the United States Navy by Glomar Explorer
- Soviet submarine K-129 (1981), a Delta III-class nuclear-powered ballistic missile submarine.
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.