Ulithian is the language spoken on Ulithi Atoll and neighboring islands. Ulithian is one of the six official languages of the Federated States of Micronesia. There are some 3,000 speakers, although only 700 of these live on Ulithi Atoll.
In 2010, a Ulithian–English and English–Ulithian dictionary was published by Habele, a US-based charity. The authors' stated aim was to create a consistent and intuitive pattern of Roman alphabet spelling useful for both native Ulithian and native English speakers.