German submarine U-33

Template:Italic title prefixed U-33 may refer to one of the following German submarines:

• Template:SMU, was a Type U 31 submarine launched in 1914 and that served in the First World War until surrendered on 16 January 1919
  • During the First World War, Germany also had these submarines with similar names:
    • Template:SMU, a Type UB II submarine launched in 1915 and sunk on 11 April 1918
    • Template:SMU, a Type UC II submarine launched in 1916 and sunk on 26 September 1917
• Template:GS, a Type VIIA submarine that served in the Second World War until sunk on 12 February 1940
• Template:GS, a Type 212 submarine of the Bundesmarine that was launched in 2004 and in active service