Edinburgh Castle was a Union-Castle Line steam ocean liner and refrigerated cargo ship that was launched in 1910 and sunk in 1945.

[1] Harland and Wolff built Edinburgh Castle at Belfast, launching her on 27 January 1910[2] and completing her that April.

[9] Edinburgh Castle was sent from England with supplies and men for the Royal Navy squadron in the South Atlantic, joining the northern elements of Admiral Craddock's forces at their coaling base off the Brazilian coast on 12 October 1914.

The ship was retained as part of the fleet to aid in the search for the German cruiser SMS Karlsruhe.

On the redistribution of forces after the German victory at the Battle of Coronel Edinburgh Castle was left with two other British ships in the north until 19 November when detached carrying mail for England.