Copiula obsti is a species of frog in the family Microhylidae.

It is endemic to the Wondiwoi Mountains in West Papua, Indonesian New Guinea.

[1][2] It is known mature forest at elevations of 400–800 m (1,300–2,600 ft) above sea level.

It lives under leaf litter on the forest floor.

It is potentially threatened by habitat loss caused by logging.