Brachmia sitiens is a moth in the family Gelechiidae endemic to southern India. It was described by Edward Meyrick in 1918.
The wingspan is 18âÂÂ19 mm. The forewings are light greyish-ochreous irrorated with rather dark fuscous. The stigmata are cloudy, dark fuscous, the plical somewhat before the first discal. A faint irregular transverse shade extends from the second stigmata to the dorsum, with traces of cloudy submarginal dots around the apex and termen. The hindwings are pale grey.