Iatt is an unincorporated community in Grant Parish, in the U.S. state of Louisiana. [1]
Iatt most likely is named after a sub-tribe of the Comanche Indians. [2] A post office called Iatt was established in 1879, and remained in operation until 1919. [3]
31°41′11″N 92°42′24″W / 31.68639°N 92.70667°W