Attalea crassispatha is a palm which is endemic to southwest Haiti. The most geographically isolated member of the genus, it is considered a critically endangered species and has been called one of the rarest palms in the Americas.
Common names for the species include carossier, carroussier, côrossié, petit coco, kawosie, ti koko, kowos, kokowos, kolowosh and kowos etranjè.
The seeds of Attalea crassispatha are edible; the flavour is reported to be similar to that of coconut, but it is richer in fats and denser. The nuts are also a good source of cooking oil.