SS Tiberton was a British steam cargo ship that was sunk during World War II by the German submarine U-23.

Operating from her homeport of Newcastle, she sailed to numerous countries including Chile, Australia and Norway.

[2] At 04.05 hours on 19 February 1940, whilst transporting iron ore to Middlesbrough (or Immingham, Lincolnshire) Great Britain from Narvik, Norway, the unescorted Tiberton was hit by one G7e torpedo from U-23 (on her eighth sailing and active patrol in the North Sea[3][4]) under the command of Otto Kretschmer.

[5] On 10 April 1940 the SS Tiberton was officially registered with Lloyd's as Missing / Untraced and a Joint Arbitration Committee considered her a "war loss".

The 33 British crew members are commemorated on the Tower Hill Memorial in London (Panel 108).