Atelopus senex (common name: pass stubfoot toad) is an extinct species of toad in the family Bufonidae.

Males are bluish gray, blue-green, black, or occasionally greenish, without patterning.

Females may have patterning consisting of cream, lemon, or lime-coloured lighter areas.

[4] Its natural habitats are stream margins in premontane and lower montane rainforests.

[1][3] Its decline is likely to have been caused by chytridiomycosis, although climate change, pet trade, and pollution are also possible threats.