Arhopala theba is a species of butterfly of the family Lycaenidae.

It is found in the Philippines on the island of Mindanao.

Like Arhopala bazaloides, but much larger, the ground¬colour beneath, except before the tornus of the forewing, nowhere lighter, but quite dark chocolate, whereasthe markings are almost purely ivory-white.

Above the male is of a wonderful morpho blue colour; a purple reflection on the costal portion, the costa and distal margin are rather broad black; hindwing with a broad black costa and a narrow black distal margin exhibiting dark internerval dots.

Female above dark brown, basaland central areas blue.