C. costaricense can refer to a few different species. The specific epithet costaricense refers to the country of Costa Rica where many of these species may be found.
- Camaridium costaricense , a plant in the family Orchidaceae
- Capsicum costaricense , a plant in the family Solanaceae
- Caryocar costaricense, a plant in the family Caryocaraceae
- Catacauma costaricense , a sac fungus in the family Phyllachoraceae
- Centropetalum costaricense , a plant in the family Orchidaceae
- Cestrum costaricense , a plant in the family Solanaceae
- Characithecium costaricense , a worm in the family Ancyrocephalidae
- Ciliciopodium costaricense , a fungus in the family Nectriaceae
- Cirsium costaricense, a synonym for Cirsium mexicanum and known as Mexican thistle
- Citharexylum costaricense , a plant in the family Verbenaceae
- Cladobium costaricense , a plant in the family Orchidaceae
- Clerodendrum costaricense , a plant in the family Lamiaceae
- Colletotrichum costaricense , a fungus in the family Glomerellaceae
- Crassolabium costaricense , a worm in the family Qudsianematidae
- Cryptocentrum costaricense , a plant in the family Orchidaceae
- Cymbopetalum costaricense, a tree in the family Annonaceae sometimes used as a spice