Umatilla Indian Reservation
![Umatilla Indian ReservationLocation in the United States](/Images/godic/202502/18/Usa_edcp_relief_location_map2356.png")
![Umatilla Indian ReservationLocation in Oregon](/Images/godic/202502/18/USA_Oregon_location_map.svg2356.png")
![Map of the Umatilla Indian Reservation,east of Pendleton](/Images/godic/202502/18/Umatilla_Indian_Reservation_map2357.png")
![Rattlesnake Pete from the Umatilla Indian Reservation](/Images/godic/202502/18/Rattlesnake_Pete_-_Umatilla_Indian_Reservation_-_Oregon2357.jpg")
The Umatilla Indian Reservation is an Indian reservation in the northwest United States, located in northeastern Oregon, east of Pendleton. The reservation is mostly located in Umatilla County, with a very small part extending south into Union County. It is managed by the three Confederated Tribes of the Umatilla Indian Reservation.