Throop Peak, Mountain summit in San Gabriel Mountains, California, United States

Throop Peak is a 9,142-foot (2,786 m) summit of the San Gabriel Mountains in the San Gabriel Mountains National Monument and Angeles National Forest, Los Angeles County, California. It marks the northwestern boundary of the Sheep Mountain Wilderness, and its entire upper mountain is covered with open, light coniferous forest.

Throop Peak is named for Amos G. Throop, the founder of the institution that became the California Institute of Technology; it was first called Throop College. The name ties the summit to the Pasadena school rather than to a local settler or surveyor.

The mountain forms part of the Hundred Peaks Section, a collection of summits that attract mountaineers from across Southern California.

The usual route starts at Dawson Saddle on the Angeles Crest Highway and climbs through Jeffrey Pine, Sugar Pine, Lodgepole Pine and White Fir. Spring and fall are the most popular seasons, with cooler temperatures and easier access. The Pacific Crest Trail passes just below the summit.

Throop Peak marks the northwestern boundary of the Sheep Mountain Wilderness, and the Pacific Crest Trail passes just below the summit. The peak is named for Amos G. Throop, founder of the college that became Caltech. Its topographic dominance is 3.11 km, with Mount Baden-Powell rising higher to the northeast.