Spinomantis bertini is a species of frog in the mantellid subfamily Mantellinae, endemic to Madagascar.

[4] Dubois put it in the subgenus Spinomantis,[5] which was elevated to genus-level in 2006.

[6] S. bertini has a relatively broad distribution in south-eastern Madagascar, at elevations of 500–1,300 m (1,600–4,300 ft) above sea level.

It inhabits crevices among boulders and rocky areas, usually close to flowing waters, in pristine forest habitats; the species is not found in degraded forests or secondary growth.

It is under pressure from habitat loss through expansion of agriculture, timber and coal production, and settlements, as well as the spread of invasive plants like eucalypts.