The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States. It is a part of the Mount Graham International Observatory.

Mount Graham is a mountain in Graham County, Arizona, United States, approximately 70 miles (110 km) northeast of Tucson. The mountain reaches 10,724 feet (3,269 m) in height. It is the highest elevation in Graham County, Coronado National Forest and the Pinaleño Mountains. It is also the southernmost peak and land area in the continental United States above 10,000 feet (3,048 m). As the name "Mount Graham" is often used by locals to refer to the entire mountain range, the peak itself is frequently referred to as "High Peak". It is twentieth of the 57 ultra-prominent peaks of the lower 48 states, and the first of the five in Arizona.