Fort Ter-Waw was a fortified position of U.S. Army located at the site of the present-day town of Klamath Glen, California.

Fort Ter-Waw was a United States military post created to establish an occupying force on the Klamath River Reservation that could "keep the peace" between the Tolowa and Yurok Native American tribes and white settlers.

It was established in what was then Klamath County, October 12, 1857, by First Lieutenant George Crook and the men of Company D, US 4th Infantry Regiment.

The site is now in Del Norte County and is marked by a California Historical Landmark (#544).

The site is at the intersection of Ter-Wer Riffle Road and Trinity Way in Klamath Glen.