Nelder Grove, Protected sequoia grove in Sierra National Forest, California.

Nelder Grove is a 1,540-acre Giant sequoia grove in the Sierra National Forest, Madera County, California, holding 60 mature Sequoiadendron giganteum trees—the largest concentration in that forest. It also contains pioneer cabins, sequoia stumps left by 19th-century loggers, and the site where the Forest King was felled in 1870.

A private timber company managed the area until 1928, when it transferred ownership to the U.S. Forest Service. This handover secured lasting protection for the remaining trees and their forest home.

The site shows traces of seasonal use by Mono and Miwok tribes, who processed acorns and gathered food here using stone tools. These indigenous marks remain visible in the ground today and tell the story of long human presence in this forest.

Access is via Road 632, also called Sky Ranch Road, off Highway 41; the dirt road into the grove turns muddy and rutted and is often blocked by deep snow in winter. The Shadow of the Giants National Recreation Trail, built in 1965, was closed and overgrown as of 2022 after the 2017 Railroad Fire destroyed its panels and bridges. A Sierra National Forest campground sits at the grove.

The Railroad Fire of 2017 destroyed the Shadow of the Giants National Recreation Trail's panels and bridges, and by 2022 the trail was still closed and overgrown. The grove lost 38 sequoias in that fire. Its sequoias also show unusually low genetic diversity, with no evidence of genetic exchange with Mariposa Grove 4.3 mi away.