Yainax Butte is a mountain located just south of the Klamath Reservation, in Oregon.

Yainax is a Klamath language word meaning "little hill".

[1] Notable residents include Toby Riddle, who lived at Yainax Butte in her later years.

The name Yainax Butte was originally applied to a smaller mountain some 12 miles (19 km) northwest, which is now known as Council Butte.

This Klamath County, Oregon state location article is a stub.