USS Portsmouth

USS Portsmouth may refer to:


 * USS Portsmouth (1798), was a 24-gun ship in service from 1798 to 1801
 * USS Portsmouth (1843), was a sloop-of-war commissioned in 1844, active in the American Civil War, decommissioned in 1878 but continuing as a training ship until 1915
 * USS Portsmouth (CL-102), was a light cruiser in service from 1945 to 1949
 * USS Portsmouth (SSN-707), a Los Angeles-class nuclear attack submarine commissioned in 1983 and decommissioned in 2004