Two submarines of the United States Navy have been named USS Sealion for the sea lion, any of several large, eared seals native to the Pacific.
- USS Sealion (SS-195), a Sargo-class submarine was wrecked and scuttled in the first days of World War II.
- USS Sealion (SS-315), a Balao-class submarine, served with distinction from the second half of World War II through first half of the Cold War.
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.