SS Harpalion was a British steamship built in 1910 and sunk during World War I.

She was built by William Gray & Company for J.

[2] She was launched on 4 October 1910 and completed shortly afterwards in November.

[1] Harpalion was torpedoed and sunk in the English Channel 6.5 miles west of the Royal Sovereign Lightship by the German submarine SM U-8 on 24 February 1915 with the loss of three of the crew.

[4] At the time, Harpalion was sailing without cargo from London to Cape Henry.