Spinomantis massi is a species of frog in the mantellid subfamily Mantellinae.

[1][2] This species was described in the genus Mantidactylus, subgenus Spinomantis, by Frank Glaw and Miguel Vences in 1994.

[3][4] The species is named massi to congratulate the daughter of Frank Glaw, Andrea Mass née Glaw, and her husband Robert Mass, on their marriage.

[6] Its natural habitats are primary forest near streams at elevations of 300–1,750 m (980–5,740 ft) above sea level.

It is threatened by habitat loss caused by subsistence agriculture, timber extraction, charcoal manufacture, the spread of invasive eucalyptus, and expanding human settlements.