5 species (see text) Alcalus is a small genus of frogs in the family Ceratobatrachidae.

[4] Common name Alcala's dwarf mountain frogs has been proposed for the genus.

[1] The genus is named in honour of Angel Alcala, a Filipino biologist who has worked with Southeast Asian amphibians.

[1] Compared to the closely related genera Cornufer and Platymantis, Alcalus have an intermediate body size (based on Alcalus baluensis and A. mariae, males measure 20–37 mm (0.79–1.46 in) and females 26–43 mm (1.0–1.7 in) in snout–vent length).

The toe discs are widely expanded; inter-digital webbing is extensive.