'TD' (i) was the designation of Allied convoys (together with a numerical suffix) plying the route from Thursday island to Darwin, Australia, and as such reciprocals of the 'DT' (iii) series (February 1943/October 1944).

The first of these convoys was TD.10 of 15/20 February 1943 with the Islander and 689-ton British Muliama escorted by the Australian minesweeper Kalgoorlie, and the last was TD.75 of 28 September/3 October 1944 with the British Edna escorted by the Australian minesweeper Fremantle.