Xylorycta viduata is a moth in the family Xyloryctidae.

It is found in Australia,[1] where it has been recorded from the Australian Capital Territory and Victoria.

Adults are shining slaty cinereous, the forewings with a narrow black subcostal stripe, which extends from the base to rather beyond half the length and with a black point beyond half the length of the stripe and nearer to the interior border than to the costa.

There are two elongate black dots on the disc a little beyond the end of the stripe, one behind the other.

The exterior border is rounded and extremely oblique.