Anacampsis rivalis is a moth of the Gelechiidae family. It was described by Meyrick in 1918. It is found in Sri Lanka and southern India. The wingspan is 13-14 mm. The forewings are grey, the tips of the scales are whitish, sometimes largely tinged light brownish. There are several small obscure spots of blackish irroration along the costa, a stronger spot preceding the subterminal line. The discal stigmata are cloudy, obscure and dark fuscous, with tufts of scales beneath these, and above the dorsum at one-fourth. There is an obscure pale subterminal line from three-fourths of the costa to the tornus, obtusely angulated in the middle and sinuate inwards towards the costa. There is also a cloudy dark terminal line or dots more or less indicated. The hindwings are rather dark grey.