'SHX' was the designation of Allied convoys (together with a numerical suffix) from Sydney, Newfoundland, to join 'HX' convoys (July 1940/August 1941).

These first of these convoys was SHX.62 of 31 July 1940 to add 25 ships, of which one turned back after a collision, to the HX.62 convoy, and the last was SHX.146 of 22 August 1941 to add 13 ships to the HX.146 convoy.