Hornstedtia annadeguzmaniae Naive & Alejandro (Zingiberaceae, Alpinioideae, Alpinieae), a new species from Mindanao, southern Philippines, is here described and illustrated. It is morphologically closely similar to H. lophophora but differs from it by having an ovate, lanate, brownish green ligule, dorsoventrally puberulous labellum, and pale magenta corolla lobes. We provide information on the distribution and habitat ecology as well as a key to the six Hornstedtia species known from the Philippines.