SS Republic may refer to the following ships:

• SS Republic (1853), lost in an 1865 hurricane with a cargo of mostly silver coins
• SS Republic (1871), a liner of the White Star Line
• RMS Republic (1903), a palatial White Star Line steamship that sank after colliding with SS Florida
• USS Republic (AP-33), originally the German ship SS Servian (1903), seized 1917 by U.S., in commercial and military use at different times, variously named President Grant, President Buchanan, and Republic, scrapped 1952
• SS Republic (1920), tanker built at Bethlehem Shipbuilding Corp, Wilmington, sank on February 22, 1942 hit by two torpedoes from German submarine U-504. Owned by American Republics Corporation
• SS Republic (1944), tanker, was El Caney, built in 1944 at Alabama Dry Dock, operated by American Republics Corporation.