Mariposa Grove is a sequoia grove located near Wawona, California, United States, in the southernmost part of Yosemite National Park. It is the largest grove of giant sequoias in the park, with several hundred mature examples of the tree. Two of its trees are among the 30 largest giant sequoias in the world. The grove closed on July 6, 2015, for a restoration project and reopened on June 15, 2018.
The Mariposa Grove was first visited by non-natives in 1857 when Galen Clark and Milton Mann found it. They named the grove after Mariposa County, California, where the grove is located.
The giant sequoia named Grizzly Giant is between probably 1900–2400 years old: the oldest tree in the grove. It has a volume of 34,010 cubic feet, and is counted as the 25th largest tree in the world. It is 210 feet tall, and has a heavily buttressed base with a basal circumference of 28 m or a diameter of 30 feet; above the buttresses at 2.4 m above ground, the circumference is only 23 m. Grizzly Giant's first branch from the base is 2 m in diameter.