Kiwaia lenis is a moth in the Gelechiidae family. It was described by Philpott in 1929. It is found in New Zealand. The wingspan is 13–14 mm. The forewings are grey with a much darker costal area extending from the base to beyond half, reaching to the plical fold and attenuated to the apex. There is a dull ochreous suffusion commencing in the fold near the base and expanding in the disc, with the area beneath the fold whitish. There is a black dash along the fold to about one-sixth, dilated apically. There are two or three black spots following this above the fold and some scattered blackish scales towards the apex. The hindwings are silvery white.