Hyptiastis clematias is a moth in the Lecithoceridae family. It was described by Meyrick in 1911. It is found in southern India.
The wingspan is 17-19 mm. The forewings are dark purplish-fuscous with a whitish-ochreous dorsal stripe from the base to the tornus, in the middle with a broad triangular prominence reaching half across the wing, before the tornus with another triangular projection which is more or less suffused posteriorly. The hindwings are whitish-ochreous, deeper-tinged and with somewhat modified scales towards the base, veins 6 and 7 and a streak along the posterior two-thirds of the costa and apical portion of the termen are suffusedly dark fuscous, in females light grey, the dorsum suffused with whitish-ochreous and dark markings indicated as in males, but indistinct.