The Tule Elk State Reserve is a nature reserve in Buttonwillow, California. It was created to preserve and protect a herd of tule elk, which was once in the brink of extinction.

Back in the mid 1800s, tule elks were reduced in number through hunting. Development and settlement in the area also caused loss of their natural habitat, further endangering their existence. Fortunately, Henry Miller, a cattleman and preservationist started to create an effort to save these creatures in 1874. A few elk only remained when he started his project. By 1932, the herd was passed to the care of the state through the creation of this state park and nature reserve.

Also known as the Tule Elk State Natural Reserve, the Tule Elk State Reserve is open on Fridays through Sundays and on scheduled special events.