Bactra optanias is a species of moth of the family Tortricidae first described by Edward Meyrick in 1911.

[1] It is found in Papua New Guinea, Australia (Queensland, Norfolk Island),[2] New Zealand, Java, Tahiti, Sri Lanka,[3] New Caledonia, the Caroline Islands, the southern Mariana Islands, Rapa Iti and Micronesia.

The forewings are whitish brown or brown, with numerous fine oblique fuscous costal strigulae (fine streaks) and some fuscous dorsal dots, as well as a fuscous terminal line.

The hindwings are whitish, with slight greyish suffusion on the terminal edge.

[5] This species inhabits swampy terrain.