Walla Walla (people), North American tribe of the Sahaptian language family and of the Plateau region culture area.

The tribe formerly occupied territory along the lower Walla Walla River and the east bank of the Columbia River, south of its junction with the Snake River.

Their language is a separate dialect, similar to the language of the Nez Perce tribe.

In 1805 they were visited by the Lewis and Clark Expedition.

In 1855 the Walla Walla were removed by treaty to the Umatilla Indian Reservation in Oregon, where they have become largely integrated with the Nez Perce, Umatilla, and Cayuse tribes.

In 1990 Walla Walla descendants, living mainly on this reservation, numbered 228.

"Walla Walla (people)," Microsoft® Encarta® Online Encyclopedia 2000 http://encarta.msn.com © 1997-2000 Microsoft Corporation. All rights reserved.