Yosemite National Park is a United States national park lying in the western Sierra Nevada of California. The park, which is managed by the U.S. National Park Service, covers an area of 747,956 acres (1,168.681 sq mi; 302,687 ha; 3,026.87 km2). Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, giant sequoia groves, lakes, mountains, glaciers, and biological diversity. Almost 95% of the park is designated wilderness.

On average, about 4 million people visit Yosemite each year, and most spend the majority of their time in the 5.9 square miles (15 km2) of Yosemite Valley. The park set a visitation record in 2016, surpassing 5 million visitors for the first time in its history.