Esan is a tonal Edoid language of Nigeria. Dictionaries and grammar texts of the Esan language are being produced, which may help the Esan appreciate their written language. There is a high level of illiteracy among the Esan, and a large number of dialects, including Ẹkpoma, Ewohimi, Ẹkpọn, and Ohordua. Most annual Esan Kings' Council meetings are largely conducted in English for this reason. However, the Esan language has been described as regionally important.