Two submarines of the Chilean Navy have borne the name Simpson and the Pennant Number SS-21.
- Chilean submarine Simpson (1962), in service 1962–82
- Chilean submarine Simpson (1982), launched in 1982, commissioned in 1984
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.