Arlee is an unincorporated community and census-designated place (CDP) on the Flathead Reservation, Lake County, Montana, United States. The population was 725 at the 2020 census. It is named after Alee, a Salish chief. The chief's name has no "r", as the Salish alphabet has no letter "r".

The Salish or Séliš language, also known as Kalispel–Pend d'oreille, Kalispel–Spokane–Flathead, or Montana Salish to distinguish it from other Salishan languages, is a Salishan language spoken by about 64 elders of the Flathead Nation in north central Montana and of the Kalispel Indian Reservation in northeastern Washington state, and by another 50 elders of the Spokane Indian Reservation of Washington. As of 2012, Salish is "critically endangered" in Montana and Idaho according to UNESCO.